Every object has weight. But the center of its weight is not always in the middle of the object. If the top of an object is heavier than its bottom, it will fall over easily. We say that its center of gravity(重力) is high. But if the bottom is heavier, it won’t fall easily. Then we say that its center of gravity is low.
|
Look at the first picture. This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB).
Now look at the second picture. There are some heavy things in the bottom of this box. It will not fall, because its center of gravity is above its bottom.
A． |
B． |
C． |
D． |
The main idea of the passage is _________.
| A．that everything has weight |
| B．a low center of gravity |
| C．a high center of gravity |
| D．why things fall over |
Zhuzhou→Beijing
|
Train No |
Leave |
Arrive |
Travel time |
Ticket price （yuan） |
||
|
Hard seat |
Hard sleeper |
Soft sleeper |
||||
|
K158 |
10：36 |
05：52 |
19hr 16min |
192 |
351 |
541 |
|
G68 |
13：38 |
20：56 |
7hr 18min |
666 |
/ |
/ |
|
G422 |
13：43 |
21：09 |
7hr 26min |
666 |
/ |
/ |
|
T146 |
16：34 |
10：52 |
18hr 18min |
192 |
351 |
541 |
|
K600 |
22：24 |
21：00 |
22hr 36min |
192 |
351 |
541 |
54．Which train needs the longest time？
A．K158
B．T146
C．K600
55．Which train leaves in the morning？
A．K158
B．G68
C．G422．
阅读下面的图表，做51﹣55小题．
|
Time：19：00﹣22：00on July 4th． Place：Piano Square near the Xiangjiang River． Special guests：Richael Clayderman and Langlang． All the teachers and students in Grade Three are welcome to enjoy the wonderful night． Programmes：10 including Yesterday once more and Country road． Drinking water is free． Held by the Students' Union of Yandi School． |
Open﹣air Piano Concert51．The concert will last for hours．
A.2
B.3
C.4
52．Where will the concert be held？
A．On Piano Square
B．In Yandi School
C．In Xiangjiang School
53．Who holds the concert？
A．Richard
B．The teachers
C．The Students'Union．
In the future，we could all work and live in buildings with their own ecosystems（生态系统）．They are made to produce more energy than they use．
Toby is an engineer from Europe．He has now made wonderful models showing what this new building could look like．
He said he was suggested by a kind of tree to create the towers．The Hyperion，found in Northern California，is the tallest tree in the world，reaching 115m．The buildings will be 120m high and have 1000 homes，offices and working spaces，gyms，restaurants and swimming pools．
Because of the ecosystem，the buildings will also make fewer diseases．
The buildings will have city farms and small animal farms producing eggs and milk．"Farming can bring methane （甲烷）that produces energy，then the energy is supplied to homes，"said Toby．
Toby has had many excellent designs （设计）．At the end of last year，he also showed designs for eco﹣friendly（环保的） ocean buildings．
The eco﹣friendly buildings don't need coul or oil as they produce their own energy and heat．
46．What is the name of the tallest tree in the world？ ．
A．California
B．Toby
C．The Hyperion
47．How high will the buildings be？ ．
A.115m
B.120m
C.1000m
48．The energy of the homes in the buildings comes from ．
A．methane
B．coal
C．oil
49．Which of the following is NOT true？ ．
A．The engineer is from Asia
B．The buildings will also make fewer diseases．
C．The engineer has had many excellent designs．
50．The passage mainly talks about ．
A．ecosystems
B．eco﹣friendly buildings
C．eco﹣friendly ocean buildings．
Reading an English newspaper is a good way to improve a student's language ability．As there are many useful and common words in an English newspaper，it may help students increase their vocabulary（词汇量）as well as improve their reading skills．（66）他们可以从报纸上学到新的知识． But what is the proper way to read an English newspaper？Do students need to look over all the content（内容）of the newspaper？
The first step is to choose a right newspaper with good language．Then turn to the front page and read the headlines（标题）to know what has happened．As the most important things are put on the front page，it's easy to find out what you're interested in and then turn to the page to read it completely．（67）There is no need to go through all the articles．
Secondly，read newspapers every day．Remember words through context（上下文），in which these words may appear repeatedly．（68）Once they appear several times，you will remember them easily．Don't look up every unknown word in your dictionary．You can try to guess the meaning between sentences．（69）如果你的猜测错了，不要放弃．Keep reading，and you will become familiar with the words after reading them several times in different texts．
Reading English newspapers makes us knowledgeable．（70）It can not only help us know what is happening in the world but also improve our language．
66． They can learn new knowledge from newspapers
67． 没有必要浏览所有的文章
68． 一旦这些词出现多次，你就能轻而易举地记住它们了
69． If your guess is wrong，don't give up
70． 读英语报纸不仅能帮助我们了解时事，而且还能提高我们的语言水平 ．
France is well known for its fine art，tasty food and romantic scenery（风景）．About 75million visitors come here every year．
France is the largest country in Western Europe．It has a population of over 66million．The country is home to many famous places of interest，like the River Seine as well as the Eiffel Tower．
Many visitors also come for the country's art．Sculptor（雕刻家）Auguste Rodin and painter Claude Monet once created their great works here．If you visit France today，it is not a surprise to meet street artists in the city or come across a singer in the subway．
No visit to Paris is complete without a trip to Louvre，one of the largest and most famous museums in the world．Inside，there are 35，000works of art，such as the painting Mona Lisa by Da Vinci and the statue（雕塑）David by Michelangelo．It would take nine months to enjoy all the pieces．
Besides，French food is world famous．Bread is very important in France．The best known French bread is called a baguette（法棍面包）．They are long，delicious and taste salty．Snails （蜗牛）are also a must﹣have here．French people eat 40，000tons of snails every year!
But France is not always good．Paris，the city of light，may also show its dark side to visitors．Chinese visitors feel sorry about the crowded subway in Paris．
61．How many visitors come to France every year？
62．Is it common to meet street artists in the city？
63．Who created the famous painting Mona Lisa？
64．Besides bread，what food is also a must﹣have for French people？
65．Why do Chinese visitors feel sorry about the subway in Paris？ ．
粤公网安备 44130202000953号