Air is all around us. It is around us as we talk and play. From the moment we were born, We are surrounded(围绕)by air. When we sit down, it is around us. When we go to bed, air is also around us. Wherever we are on the earth, We are surrounded by air. We live in air.
All living things need air, living things can’t live without air. We can go without food or water for a few days, but we can’t live for more than a few minutes without air. We breathe(呼吸)in air. When we are working or running, We need more air. So we breathe faster than usual. When we are asleep, We need less air.From the text, we know that on the earth _____
| A．there is air everywhere |
| B．some animals don’t need air |
| C．plants need more air |
| D．for a long time people don’t need air |
The writer tells us that _____
| A．there is less air on the earth than on the moon |
| B．the earth is covered with air |
| C．the earth is covered with water |
| D．there is no air on the earth |
Which is the first important thing for people’s lives?
| A．Water | B．Air | C．Food | D．Sunlight |
Which of the following things needs air?
| A．Land | B．A mirror | C．A cat | D．A river |
A man needs more air when he _____
| A．dies | B．runs fast | C．takes a rest | D．sleeps |
Rupert Isaacson was born in Africa， and grew up in London and in the English countryside， where he discovered his love of horses． Because he grew up hearing so many fascinating memories about Africa from his parents， he went there and lived with the people called The Bushmen of the Kalahari Desert．
By the year 2000， Rupert was already working as a reporter， writing articles and guidebooks about Africa and India． He met his wife Kristin in India． Today， they live with their son， Rowan， in the US． But Rupert faced the greatest challenge of his life when， at the age of two， Rowan was diagnosed （诊断） with an illness that influenced his ability to communicate with others．
Rupert discovered that spending time with horses and riding them was helping Rowan． But unluckily， the Bushmen of the Kalahari do not have horses． So the family set out for Mongolia， where horses have been important for long． Rupert has written about this journey to help his son in his book Horse Boy， and he has produced a documentary of the same name． In the film， people have the chances to see the family travelling in Mongolia， riding horses and meeting healers （治疗师） in order to help Rowan．
Because working with horses has helped Rowan， Rupert set up The Horse Boy Foundation on his farm in Texas． It is a school that teaches people how to use horses for healing． Besides writing another book， The Long Ride Home， about travelling with Rowan to Africa， Australia and Arizona in the US， Rupert has also produced the documentary Endangerous， with Rowan as host， about dangerous animals that are endangered． Rupert Isaacson has managed to discover the secret of turning one challenge into many achievements．
（1）Where did Rupert Isaacson discover his love of horses？
A． In the English countryside．
B． In India．
C． In Africa．
D． In Mongolia．
（2）When was Rowan diagnosed with the illness mentioned in the passage？
A． In the year 2000．B． At the age of two．
C． When he was in Mongolia．D． When he was in London．
（3）Why did Rupert's family go to Mongolia？ Because there．
A． he worked as a reporter
B． there were no horses
C． there were lots of horses
D． he wanted to meet his wife
（4）What is the purpose of The Horse Boy Foundation？
A． To produce a documentary．
B． To communicate with others．
C． To learn how to ride horses．
D． To teach people how to use horses for healing．
（5）How many documentaries has Rupert produced in the passage？
A． Two．
B． Three．
C． Four．
D． Five．
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（1）The garden sensor helps the environment and does yard work at the same time． （判断对错）
（2）It takes the inflatable chair more than five minutes to fill with air． （判断对错）
（3）The soundbook works indoors or outdoors． （判断对错）
（4）A person needs two monofins， one for each foot． （判断对错）
（5）Soundbook is the most expensive of the four products while the inflatable chair is the cheapest． （判断对错）
The population of the world continues to increase， but in some areas the population is falling．This is true in Europe and especially in Eastern Europe． In Russia， the population is going down by about 100 people EVERY HOUR! Russia's population could fall by ONE THIRD by the year 2050! And in Poland （波兰）the population is also going down because people are leaving to work in other countries．
One of the main reasons is a change of lifestyle． All over Europe people， especially educated women， have a different attitude （态度）to children than their parents．"I have one child and she is enough for me， "said Galina Tereschkova， a doctor from Moscow． "My husband and I both work full﹣time． We can't imagine having more than one child． "Many women decide to have children later in life or not to have children at all． "I don't want to have any children until I have worked for at least 10 years， "said 19﹣year﹣old student Hana Markova from Prague． Her opinion is typical of 18﹣24 year old women everywhere in Europe．
In Poland， the population is going down for a different reason． A lot of people，usually aged between 20 and 30， are leaving the country to work abroad． Poland joined the European Union in 2005 and since then more than half a million people have moved to Britain， Germany， Spain and Italy． Even so， the population of those four countries and many other countries in West Europe is also going down．
Many governments are now encouraging people to have larger families． In France，women now receive nearly 1，000 a month for a year if they have a third child．Austrian women receive 700 a month for three years when they have their first child．
（1）Where in the world is the population getting smaller？
（2）How many children does Galina Tereschkova want to have？
（3）What does Hana Markova want to do before she has children？
（4）Why is the population in Poland going down？
（5）How does the French government encourage people to have larger families now？
Do you want to improve your physics and chemistry grades？ Well， maybe you should first lean something about the struggles（奋斗）of great scientists．
The American Psychological Association did an interesting study． More than 400 students from schools in New York City took part in it． The students were divided into three groups． Group I read a typical textbook that describes the achievements of great scientists． Group 2 read about those scientists' personal struggles． For example， as a Jew， Einstein（爱因斯坦） ran away from Nazi Germany to avoid persecution （迫害）． The last group read about the scientists' intellectual struggles，such as Marie Curie's failed scientific tests． These stories about struggles also told students how the scientists dealt with these obstacles（障碍）．
The students took a science exam before the study． After the six﹣week study， they took another Scientists found those in Groups 2 and 3 improved their science grades． Students in Group I didn't see a grade increase． Some of them even had lower grades after the study．
The study was led by Xiaodong Lin﹣Siegler， a teacher at Columbia University．According to Xiaodong， kids often think Einstein was truly intelligent． They believe they will never match him． Many of them fail to realize that any success requires a long journey． Along the way， there are many failures（失败）．
Students who read the struggle stories more probably said that great scientists were like themselves． The "great minds" also had to overcome obstacles to achieve success．
Xiaodong says today's science textbooks fail to bring science to life． As a result，students seldom regard science as part of their everyday lives． Instead， they just see a long list of facts that they have to remember． Xiaodong thinks textbooks should include more stories about how great scientists had to struggle to succeed． And students should focus more on how these scientists dealt with the obstacles they met along the way．
根据短文内容，选择最佳答案．
（1）According to the article， students can improve their physics and chemistry grades by ．
A． reading the achievements of great scientists more carefully
B． listening more carefully to their physics and chemistry teachers
C． learning about how great scientists dealt with their obstacles
（2）All of the students who took part in the study ．
A． were interested in physics and chemistry
B． went to school in New York City
C． wanted to improve their physics and chemistry grades
（3）Andy Hunt was one of the students who took part in the study． According to his report card， he was probably a member of ．
Andy Hunt Class 2． grade 9 Physics 2018﹣4﹣9 86 2018﹣5﹣22 79 |
A． Group 1
B．Group 2
C．Group 3
（4）In Paragraph Four， the word "match" means " " in Chinese．
A．满足
B．比得上
C．配对
（5）Xiaodong Lin﹣Siegler thinks science textbooks should ．
A． tell students directly that Einstein was born a common man
B． make the long lists of facts that students have to remember more interesting
C． include more stories about how great scientists had to struggle to succeed
Do you often listen to music at loud volumes？ You should know that this habit is bad for your hearing． Over 1 billion young people are at risk of hearing loss（听力丧失）， because of listening to loud noise for long periods of time． Listening to music or watching a TV show at loud volumes can harm your hearing．
The United Nations has standards for safe listening． It is not safe to listen to sounds that are louder than 85 dB （分贝） for eight hours or 100 dB for 15 minutes．The sound of a busy road is about 85 dB and the sound of a rock concert can be about 100 dB．
Loud noise is harmful to the inner ear． Most of us are born with about 16，000 hair cells（听毛细胞） in our inner ears． These cells notice sounds． However， listening to loud noise for a long time can make these cells work too hard and cause some of them to die． This is what causes hearing loss Once this happens， it's hard to get your hearing back．
Some people might think that their music isn't all that loud． But this can depend on where you are． For example， if you are in a noisy place like the subway， you might turn up your music too loud without realizing it． Later， when you listen to it at the same volume in a quiet place， you might feel uncomfortable．
The "safe level" for most sound is below 80 dB for up to 40 hours a week． a level of 80 dB is about equal to（相当于） the noise of a subway．
Here is some advice on safe listening． Over﹣the﹣ ear headphones（头戴式耳机） are better than in﹣ear ones． They do a better job of stopping outside noise， so you can listen at a lower volume．Don't listen to loud music on your headphones for a long time． Follow the 60： 60 rule： listen to music at 60 percent of your headphones' maximum volume for no more than 60 minutes a day．
根据短文内容，判断下列句子正误．正确的用"A表示，不正确的用"B"表示．
（1）It is safe to listen to sounds that are louder than 100 dB for 15 minutes．
（2）Listening to loud noise for a long time can cause some hair cells in the inner ear to die．
（3）From the fourth paragraph， we know people don't always realize how loud their music is．
（4）In﹣ear headphones are better than over﹣the﹣ear ones because they can stop more outside noise．
（5）This article mainly tells us why ears are an important part of our bodies．
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