China's Grand Canal
Most people have heard of the Great Wall of China，but not many people outside of China know about the Grand Canal.This man﹣made waterway﹣known in China as Da Yun he ﹣ is 1，700 kilometers long and some parts of it are more than 2，000 years old.It linksthe north of China with Hangzhou，a city in the southern part of the country.It's the longest man﹣ made waterway in the world.
It was built as a way to transport grain （谷物） from the rich agricultural land in China's south to cities in the north.In fact，it's not one canal，but a system of canals and rivers linked together.It's still an important part of the transport system in China.Thousands of boats use it every day to transport grain and many other types of cargo.
Now the Chinese government is doing new work on the Grand Canal，It is making parts of it deeper，so bigger ships can use it.The canal will also help to move water.There is a lot of rain in the south of China，but not as much in the north.The canal will carry millions of liters of water from the south to the north.
The Grand Canal is much less famous than the Great Wall，and not very many tourists visit it.But its possible to go on a cruise （乘船游览） along some of the oldest parts of the canal.Passengers on these cruises see beautiful parts of China that other visitors don't see.
（1）From the passage，we know that the Grand Canal is .
| A． |
more than two thousand years old |
| B． |
more famous than the Great Wall |
| C． |
the longest man﹣made waterway |
（2）What does the underlined word"'links" mean in paragraph 1？
| A． |
Connects. |
| B． |
Compares. |
| C． |
Competes. |
（3）What is the main idea of paragraph 2？
| A． |
The Grand Canal is helping to move water. |
| B． |
Why the canal was built and how it is used now. |
| C． |
The Grand Canal was used for transporting grain. |
（4）The writer wrote this passage to .
| A． |
describe how beautiful the Grand Canal is |
| B． |
introduce how important the Grand Canal is |
| C． |
explain why few people visit the Grand Canal |
（5）This passage is probably taken from a magazine.
| A． |
history |
| B． |
fashion |
| C． |
science |
When your town has winter，the earth's axis（轴） is pointing away from the sun.Your town doesn't get as much light or heat from the sun.The days are shorter and colder.
Winter and summer happen because the earth is tilted（倾斜） as it revolves around the sun.The northern end of the earth's axis points towards the sun in summer.You have more hours of light in summer.Your part of the earth is towards the sun for more hours each day.When the part of the earth where you live is towards the sun，you have hotter days.In winter，when your part of the earth points away from the sun，you have colder days.
You have learned about winter and summer.There are two more seasons in the year.One comes after winter and before summer.The other season comes after summer and before winter.Can you name them？That's right.Spring comes between winter and summer and autumn comes after summer but before winter.
The four seasons are spring，summer，autumn and winter.Spring and autumn are opposite seasons.Which season do you like best？
You have thought about the four seasons of the year.Each season is different.The seasons are made by the northern end of the axis pointing towards or away from the sun.
Your part of the world gets more heat from the sun when the northern end of the axis points to the sun.When the axis points away from the sun，you get less heat.Now you know why winter is colder than summer.The axis is pointing away from the sun in winter.It is pointing towards the sun in summer.
（1）What does the underlined word "revolves" in paragraph 2 mean？
A.Moves.
B.Turns.
C.Jumps.
D.Sites.
（2）What is the passage mainly about？
A.How four seasons happen.
B.How the weather changes.
C.When the earth's axis points towards the sun.
D.When the earth's axis points away from the sun.
（3）Where does the passage probably come from？
A.A film guide.
B.A storybook.
C.A science magazine.
D.A book review.
You might have seen beautiful rainbows in the sky before.They form when sunlight falls on water drops in the air.But in fact，moonlight can also create rainbows in the same way.They are called "moonbows".They are similar to rainbows，but they are created by moonlight instead of direct sunlight.
Moonbows are rarer than rainbows.Different weather and astronomical （天文学的）conditions have to be just right for moonbows to be created.
The moon has to be very low in the sky — only 42 degrees from the horizon （地平线）.The moon period has to be a full moon or nearly full.The sky must be very dark for a moonbow to be watched clearly — any bright light can obscure it.Water drops must appear in the air in the opposite direction of the moon.
Moonbows appear on the opposite side of the moon and usually look white to the human eye.This is because their colors are not bright enough to be noticed by the human eye.It is possible，however，to view the colors in a moonbow using long exposure （长时间曝光）photography.
Moonbows more often appear in some locations around the world.Most of these locations usually have waterfalls，which create thin fog in the air.Some of these locations are the Yosemite National Park in California and Cumberland Falls State Resort Park in Kentucky，US；Victoria Falls on the border of Zambia and Zimbabwe；and Waimea in Hawaii，US.
Moonbows do really happen.So at a certain time and a certain place，when a moonbow happens to appear，you can't miss it if you' re right there.
（1）According to the first two paragraphs，moonbows are .
A.created by sunlight
B.much easier to find
C.seen during the day
D.more difficult to form
（2）Which of the following can be the conditions for a moonbow to form？
A.A half moon hangs high in the bright sky.
B.A full moon is 50 degrees from the horizon.
C.A nearly full moon hangs low in the dark sky.
D.Water drops are in the opposite direction of the sun.
（3）What does the underlined word "obscure "in paragraph 3 probably mean？
A.cover.
B.drop.
C.connect.
D.produce.
（4）What is paragraph 5 mainly about？
A.Conditions of moonbows.
B.Background of moonbows.
C.Locations of moonbows.
D.Development of moonbows.
In the Spring and Autumn period （475 ﹣ 221 BC） there lived a man called Ji Zha.He was the fourth son of the king of the Kingdom of Wu.Because of Ji Zha's sticking to righteousness（正义）and wide learning，he was his father's favorite and the king wanted to make him his heir（堆承人）.However，Ji Zha refused because he thought the king's eldest son should be the one to receive the throne.Later，Ji Zha served as an ambassador（外交大臣） of Wu to other kingdoms in China.
Once，on a mission to the Kingdom of Lu，Ji Zha passed through the Kingdom of Xu.The king of Xu received him as a friend，and admired the valuable sword（剑） Ji Zha was wearing.Although his host didn't mention it，Ji Zha could see he wanted to own it very much.However，as he still needed to go to Lu，Ji Zha didn't give the king of Xu his sword as a present.
After finishing his mission to Lu，on his way back，Ji Zha once again passed through Xu.This time he decided to give the sword to the king of Xu.But when he arrived，his friend had already passed away.Ji Zha didn't expect it and felt very sad.He took off his sword and gave it to the dead man by hanging it on a tree near his tomb（坟墓）.
Ji Zha's attendants （随从）didn't understand his action，saying， "Sir，the king of Xu is already dead.Why do you still give up your sword to him？ "
Ji Zha shook his head， "When I came to the Kingdom of Xu last time，I noticed that my friend admired my sword and I decided that when I came back I would give it to him.However，I never expected this turn of events.But how could I change my mind just because the man had died？" With these words，he left the place，low﹣spirited and heart﹣broken.
（1）What do we know about Ji Zha from the passage？
A.He was born in 221 BC.
B.He didn't have the ability to be a king.
C.He was a careful and generous man.
D.He lost his fight for the throne to his brother.
（2）Why did Ji Zha give up his sword to the king of Xu although he had died？
A.He was loyal to his country.
B.He was loyal to righteousness.
C.He wan guilty of his friend's death.
D.He was guilty of not seeing his friend before his death.
（3）What is the best title of this story!
A.Ji Zha and His Friend.
B.Ji Zha and His Country.
C.Ji Zha Gives Up His Throne.
D.Ji Zha Gives Up His Sword.
Hi，I'm Giorgio.I'm from Sicily.It's a beautiful island in Italy.I live in a village on the coast（海岸）.The sea is blue and I like to go fishing.
The capital of Italy is Rome.It is a very old city full of famous buildings.St Peter's is a very big and beautiful church（教堂） there.
Rome is very busy，but Milan is busier than Rome.It is in the north west of Italy.Do you know is famous football team？Milan has a population of 4 million people.People are busy working.
Venice is on the sea，and people use boats，not bicycles or buses for transport.Venice is beautiful，with lovely，old bridges and buildings by the water.
I'm happy on my island—and we have very good pizzas.
（1）Where is Giorgio from？
A.Italy.
B.India.
C.England.
（2）Rome is .
A.busier than Milan
B.the capital of Italy
C.famous for football
（3）Milan has a population of .
A.4 million people
B.5 million people
C.6 million people
（4）If you are in Venice，how will you go to school？
A.By boat.
B.By bus.
C.By bike.
The world's highest highway tunnel（公路隧道），Mila Mountain Tunnel，was open to traffic on April 26，2019，at an altitude（海拔） of over 4，750 meters above sea level in Southwest China's Tibet.
The two﹣way tunnel is over 5.7 km long，which is a part of the 400﹣km highway connecting Lhasa with Nyingchi.People started building the tunnel on the5，018﹣meter﹣high Mila Mountain in 2015.And it was finished in 2019，helping shorten the 18﹣km distance（距离）over the mountain to 5.7 km.
It wasn't easy to build the highest tunnel in China.Terribly cold weather and too little oxygen（氧气）were two main difficulties.Besides，carrying everything to the building site（工地）was a great challenge for over 2，000 workers.
However，everyone at the site worked hard to finish building the tunnel on time and more than 10 latest techniques were developed while the workers were doing this great project. "We've worked here for several years and lived in simple houses， "said Xu Yong，the leader of the project. "Everything was so difficult，but we never fee sorry for ourselves here.It is a great project. "
The highway is an important way to the eastern part of Tibet.It can help to make more people visit Tibet and bring traffic convenience to local people.
（1）How long did it take to finish building the two﹣way tunnel？
A.About three years.
B.About four years.
C.About five years.
D.About six years.
（2）What CANNOT we know from the second paragraph？
A.How long the tunnel is.
B.Where the tunnel is built.
C.How high the Mila Mountain is.
D.What materials were used to build the tunnel.
（3）What does the third paragraph mainly tell us？
A.Why people wanted to build the tunnel.
B.How many workers worked in the construction（建设）of the tunnel.
C.What problems the workers faced when building the tunnel.
D.How the workers solved the problems of building the tunnel.
（4）What can we infer from Xu Yong's words？
A.It's worth putting much time and work into building the tunnel.
B.It took them many years to get used to living there.
C.They earned a lot of money by building the tunnel.
D.Their living and working conditions were not very bad.
（5）What's the writer's purpose in writing the passage？
A.To show the development of Tibet.
B.To encourage more people to travel to Tibet.
C.To introduce the altitude of the highway tunnel.
D.To tell something about the world's highest highway tunnel.
Two magazines recently listed the best cities to live in．Here are two of the cities listed as"the world's best．"
SAN JOSE，COSTARICA The city has comfortable weather all year round （15℃to 26℃）．Housing is not very expensive in SAN JOSE．Also，many of the city's older neighborhoods are very beautiful and have small hotels and cafes．Beautiful mountains are around the city．Lots of people go sightseeing there every year．But air pollution is a problem in the city center．
Hong Kong，CHINA，this lively city﹣﹣﹣﹣once a small fishing village﹣﹣﹣﹣﹣is today an international business center．It is an interesting mix of East and West，old and new．Modern tall buildings are next to small temples （庙宇）．Popular nightclubs are close to traditional teahouses．Busy people fill the streets at all hours of the day．But outside the city，there are parks for walking or relaxing．Hong Kong is famous for its wonderful native dishes．There's also food from Europe，North America，and other parts of Asia．However，this small city has a large population of nearly seven million!That's why housing is often very expensive．Traffic and air pollution are also a problem．
51．Which of the following is NOT mentioned about San Jose？
| A． |
The weather |
| B． |
The mountains |
| C． |
The air |
| D． |
The traffic |
52．What makes Hong Kong the world's best according to this passage？
| A． |
The lively city and the wonderful dishes． |
| B． |
The large population and the traffic． |
| C． |
The expensive housing． |
| D． |
The beautiful temples． |
53．What do the two cities have in common？
| A． |
They both have beautiful mountains． |
| B． |
They both have a large population． |
| C． |
Air pollution is a problem in both cities． |
| D． |
They are both crowded． |
54．The word"mix"here means ．
| A． |
交点 |
| B． |
融合 |
| C． |
区别 |
| D． |
中点 |
55．From the passage，we can know that ．
| A． |
San Jose and Hong Kong are the only two cities of the world's best． |
| B． |
Housing in San Jose is not very expensive． |
| C． |
the weather in both cities is fine． |
| D． |
San Jose used to be a small fishing village． |
Welcome to the Art Museum!
You've just stepped into one of the world's greatest collections of art，covering centuries of human creativity from around the world．With thousands of works on Show，You may wonder how to start your visit，but we are here to help．On the back of this Visitor Guide，you'll find directions to some must see works in our collection﹣the"don't miss"list for the Art Museum．It's a great choice to start if you are new to the museum．
The following pages include a clear floor plan of the museum and its collections．But because we have several buildings，the overlook（鸟瞰图） below might be helpful．Enjoy your visit and feel free to ask for help and directions at any point during your stay．
56．The passage is a page from ．
| A． |
a tour map． |
| B． |
a newspaper． |
| C． |
a visitor guide． |
| D． |
a picture book． |
57．What can we see in the"don't miss"list for the Art Museum？
| A． |
Some free paintings． |
| B． |
Some must﹣see works． |
| C． |
Some new collections． |
| D． |
Some museum buildings． |
58．How many parts does the overlook of the museum include？
| A． |
Two |
| B． |
Three． |
| C． |
Four． |
| D． |
Five |
59．Which part of the museum shows Chinese art？
| A． |
The"Bridge" |
| B． |
Rice Building． |
| C． |
The Modern Wing． |
| D． |
Mckinlock Court |
60．Where can we see the special artworks？
| A． |
On all floors of Rice Building． |
| B． |
On the second floor of Rice Building． |
| C． |
On the first floor of Michigan Avenue Building． |
| D． |
On the lower floor of Michigan Avenue Building． |
People often think of the North Pole（北极） and the South Pole as similar frozen（冰冻的）
wastelands．They are both places with very cold temperatures and few people live there．However，the North and South Poles are not much alike as people may imagine．
The North Pole has no land，only thick ice．Temperatures seldom go above 32°F，at which water turns into ice．Most of the time，it stays below zero．In winter temperatures are usually as low as﹣30°F．
Although conditions were very poor，people tried for many centuries to reach the North Pole．About 100years ago，two men，Robert Peary and Mathew Henson，were able to get to this environment full of troubles and difficulties．They reached the North Pole on March 8th，1909．It was really a hard trip for them．
There are few things more dangerous than crossing the Arctic（北极圈） on foot．People who stayed there may face many problems：very cold temperatures，sudden storms，and even hunger．Most of the area is uninhabited．Few people can live in such a difficult place．
People might think that with such low temperatures for most of the year，the ice would be thick and hard．However，this is not true in the Arctic．The movement of the ocean water under the ice may often cause many different changes on the surface．Sometimes the ice breaks into two opening lanes of water（水道） called"leads"．Anyone who falls into a lead can be frozen to death in a few minutes．
（1）This passage is probably from ．
A．a book review
B．a science book
C．a school report
D．a computer magazine
（2）According to the passage，what happened about 100years ago？
A．Two men succeeded in getting to the North Pole．
B．Temperatures in the North Pole went above 32°F．
C．The environment in the North Pole suddenly became worse．
D．The North Pole changed into thick ice because of the temperatures．
（3）What does the underlined word"uninhabited"probably mean in Chinese？
A．气候恶劣的
B．充满危险的
C．困难重重的
D．无人居住的
（4）The reason for the ice to break into two opening lanes of water is ．
A．that the temperature suddenly drops
B．that the water under the ice is frozen
C．that the ocean water under the ice moves
D．that the surface is covered with lots of ice
（5）What does this passage mainly talk about？
A．The thick ice in the North Pole．
B．A difficult trip to the North Pole．
C．The real situation in the North Pole．
D．The differences between the North Pole and the South Pole．
Siena is an old city in the north of Italy．It began with a group of people living on its hills over 2，900 years ago．Around the year 1100，Siena became an important business center in Italy．In 1472，the first bank of the world was built in this city and has been doing business ever since．
Today Siena is famous for keeping its"old face"．For example，its city walls，which helped keep the city safe in the past，are hundreds of years old now and look almost the same as before．Also，many old buildings are seen at the Piazza del Campo，the most important meeting place of the city．Few things have really changed in this center of public life for hundreds of years．Now people still go to the open space for sharing news，shopping，or playing sports．There is one more thing that helps keep Siena's old face：cars cannot enter the city most of the time．
True，Siena is old，but it's beautifully old．People are welcome to visit this beautiful city and walk into the past．
根据短文内容，判断下列句子是否正确，对的涂（A），错的涂（B）．
51．The old city，Siena，began more than 2，900 years ago．
52．Siena is famous for having the first bank of the world today．
53．People in Siena have protected the old city walls very well．
54．Few old buildings can be found at the Piazza del Campo．
55．Most of the time cars are not allowed to enter Siena． ．
It is expected that Pacific Island countries will become popular with Chinese tourists in 2019． Which one should you choose for your summer holiday？
| Country |
What you need to know |
Language |
What you need to do |
| Papua New Guinea |
It is the largest one of the Pacific Island countries． Both the mainland and its islands are perfect for deep sea diving （潜水）． |
English & Tok Pisin |
Go deep sea diving in the Solomon Sea． |
| Kingdom of Tonga |
Tonga is ahead of the rest of the world： it's the first country in the world to start a new day． |
English & Tongan |
Visit the Royal Palace of Tonga． |
| The Republic of Vanuatu |
It sits between Hawaii and Australia． In Vanuatu， you'll find the world's only underwater post office in the capital， Port Villa． |
English， French & Bislama |
Send a postcard from the underwater post office． |
| Fiji |
Fiji is one of the world's best﹣known places for your holidy． The island's blue sea， white﹣sand beaches and the forests are well worth seeing． |
Fijian & English |
Go diving on Mana Islan． |
（1）Which country is the first one to start a new day？
A． Papua New Guinea．
B． Kingdom of Tonga．
C． The Republic of Vanuatu．
D． Fiji．
（2）People go to Fiji for their holidays mainly because ．
A． things there are well worth seeing
B． the underwater post office is exciting
C． they want to stay in the Royal Palace
D． it is the largest Pacific Island country
（3）Which language is spoken in all the four Pacific Island countries？
A． Tok Pisin．
B． French．
C． Bislama．
D． English．
（4）What is the purpose of the text？
A． To ask for some help．
B． To introduce languages．
C． To answer a question．
D． To offer holiday choices．
Job interviews can be very different from country to country． An interviewer's "body language" and questions， and the form of an interview are not the same around the world．
If you're at a job interview in Japan， don't look directly into the eyes of the interviewer． It is considered impolite． But if you're at an interview in the US， you should make eye contact（交流） with the interviewer． If you don't， the interviewer may think you are not sure about your ability．
In the US and some other countries， interviewers aren't supposed to ask questions about family and personal information． In most countries， however， personal questions are very common during job interviews．
In Germany， your interview might begin with a very short conversation followed by a formal （正式的） interview． In Mexico and many other countries， the whole interview might not be formal．
（1）In Japan， looking directly into the eyes of the interviewer is
A． boring
B． impolite
C． humorous
D． dangerous
（2）What is suggested at an interview in the US according to the text？
A． Sitting by the interviewer．
B． Making eye contact．
C． Talking about family background．
D． Asking personal information．
（3）In ，a short talk usually begins before a formal interview．
A． Japan
B． the US
C． Germany
D． Mexico
（4）In which part of a magazine can we read the text？
A． Science．
B． Geography．
C． Culture．
D． Sports．
If you walk along the River Thames， there are lots of interesting buildings to see．Running through the heart of London，there are also many galleries， markets， shops and keep you busy along its banks． You will also see a strange round building．It looks very old and very different from all the others．This is Shakespeare's Globe Theatre（莎士比亚环球剧场）．
The Globe Theatre was first built here in 1599．William Shakespeare was one of the most famous writers that ever lived．His plays were performed in the theatre for many years．However，in 1613， a fire broke out during a performance．The theatre was destroyed（毁坏），but the second was built the following year．It remained a theatre until 1644，and then it was pulled down to build houses．The modern（and also the third） Globe Theatre was completed in 1997， over 350 years later．This was done to honor Shakespeare，the most famous English writer．To this day， his many plays are performed there daily．He wrote around thirty﹣eight plays．They are comedies（funny stories） ，histories（about historical events and people） ， and tragedies（serious and sad stories）．People come from all over the world to watch them at the Globe Theatre．They are performed in exactly the same way as they were hundreds of years ago．
The building is round and made mostly of wood．There are simple seats on three different levels all around the sides．Everyone can see the stage（舞台）．However．there is no roof（屋顶） in the middle! The cheapest tickets are standing tickets． You stand in the middle，right in front of the actors，but if it trains，you will get wet!
（1）When was the second Globe Theatre built？
A．In 1599．
B．In 1613．
C．In 1614．
D．In 1997．
（2）What can we know about Shakespeare according to the second paragraph？
A．Shakespeare was one of the most famous French writers．
B．Many of his plays are performed daily in the modern Globe Theatre．
C．His plays are performed in a different way from they were hundreds of years ago．
D．He wrote thirty﹣eight plays that were all about historical events and people．
（3）What does the last paragraph mainly tell us？
A．The inside structure（结构） of Shakespeare's Globe Theatre．
B．The history of Shakespeare's Globe Theatre．
C．The opening time of Shakespeare's Globe Theatre．
D．The three types of tickets that you can choose．
（4）Which of the following statements about the modern Globe Theatre is TRUE？
A．It has remained there for over 350 years．
B．The round building looks old and strange．
C．It is made mostly of wood and has around roof in the middle．
D．If we buy the cheapest tickets in the theatre， we will be farthest from the stage．
Part of Earth's beauty comes from its oceans． Ocean scientists study the chemical make﹣up of the ocean，weather patterns， the geography of the ocean floor， and many other areas． Their work is exciting，although sometimes dangerous． Using technology to do certain tasks helps．For example，robotic arms are used for very dangerous tasks．
One basic part of ocean study is understanding waves and how they work．Wind is the great maker of waves． The waves we know are mostly produced by winds blowing over the sea． They are directly connected with the wind speed and the time that wind lasts．
Sometimes ocean life can be seen in the wave．Living things seem to be staying within the wave，moving slowly inside it as if they were weightless．Besides the beauty of waves， scientists are interested in their technical ways． The diagram of waves shows how scientists examine waves． Waves are measured （测量）from the top （crest） to the bottom （trough）． This allows scientists to find out the height of a wave． They also measure waves from crest to crest to determine（测定）the length of a wave．
During serious storms， huge waves might cut a sea ship apart． Ships are at great risk of winding up as broken pieces after being hit by the force of a huge wave． By understanding the ocean，scientists can prevent this breakup of ships by predicting when the water will be too dangerous for people and their ships． The study of waves and the ocean also allows scientists to make sure how certain beaches were formed． By studying the oceans， a great deal can be learned about the surface we live on．
（1）Why are robotic arms used？ Because ．
A． certain tasks are very dangerous
B． the tasks are exciting
C． the oceans are beautiful
D． there are many studying areas
（2）What can we learn from the second paragraph？
A． Waves can make wind．
B． Most waves are produced by winds．
C． Scientists make most waves．
D． Waves have nothing to do with wind．
（3）What is the meaning of "the length of a wave" according to paragraph 3？
A． The beauty of huge waves．
B． The technical way to study the sea．
C． The distance from crest to crest of a wave．
D． The distance from the top to the bottom of a wave．
（4）Which of the following statements are right according to the passage？
①Scientists can decide the weather patterns．
②We can't find living things in the waves．
③By studying the ocean， scientists can prevent the breakup of ships．
④The study of waves helps scientists know how certain beaches were formed．
A．①③
B．②④
C．③④
D．②③
（5）Where is the passage probably from？
A． A diary entry．
B． A fairy tale．
C． A travel guide．
D． A science magazine．
The longest river in the world is the Nile． It is 4，160 miles long． But the Nile is not the mightiest （浩荡的） river． The Amazon is．The Amazon is also the second longest river in the world．It is 3，900 miles long． How long is that？ It is longer than a road going from New York City to San Francisco．
The Amazon is the mightiest for this reason． It has the greatest amount of water． More water runs out to sea than from the Nile． Mississippi， and Yangtze rivers combined． That's a lot of fresh water! The force of its current （水流） is great too． The current can be seen 200 miles out in the sea． There's a story to show the Amazon's amazing current． A ship sailed （航行） far away from Brazil． It ran out of drinking water． Another ship passed by． The first ship asked for water． Someone on the second ship said． "Just put your buckets （桶） into the sea．"
Here are a few more facts． At its mouth， the Amazon is 90 miles wide．Even up the river，you can't see the opposite bank． The river is also very deep（from 22 to 76 meters）．During rainy season，the river rises about 16 meters more． Big ocean ships can sail about 1，800 miles upstream （向上游）．Smaller ships can sail 1，000 miles farther．
What's the most bloodthirsty fish in the world？ No． It's not the shark． It's the Amazon's piranha． It is only about 10 cm to 20 cm long． It has sharp teeth． Thousands travel in a group． No animal can swim across the river．A 1，000﹣pound horse would be just bones （骨头） in three minutes． Are you planning a trip to the Amazon？ Here's a piece of advice． Leave your swimsuit at home!
根据短文内容，选择最佳答案．
（1）After reading this passage it seems clear that ．
A． people do not drink the Amazon's water
B． it would not be good to visit the Amazon during rainy season
C． sailing on the Amazon requires：knowledge of its current
（2）The writer helps you understand how long the Amazon is by ．
A．telling how long the Nile is
B． comparing it to a distance（距离）on land
C． comparing it with the Yangtze River
（3）In Paragraph Four， the word "sharp" means" "in Chinese．
A．锋利的
B．急剧的
C．强烈的
（4）The passage mainly tells us ．
A． piranha in the Amazon
B． traveling in the Amazon
C． interesting facts about the Amazon
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