Teeth are important. Strong, healthy teeth help you chew all kinds of foods that help you grow. They help you speak clearly. And yes, they help you look your best. Here are some tips for you to take care of your teeth.
小题1:How many times at least should we brush our teeth a day?小题2:What is the major cause of tooth decay?| A．Not brushing teeth. | B．Not changing toothbrushes. | | C．Eating sugar. | D．Not flossing teeth. |
小题3:How often should we change our toothbrushes?| A．Never. | B．Three times a month. | | C．Every three months. | D．Every month. |
小题4:The bristles of the toothbrush must be_______. | A．hard | B．soft. | C．expensive. | D．not mentioned. |
小题5:Which is the right way to take care of your teeth?| A．Only brush front teeth. | | B．Don’t brush teeth before sleeping. | | C．Spend at most three minutes brushing teeth each time. | | D．Eat lots of fruit and vegetables and drink water instead of soda. |
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小题1:B
小题1:C
小题1:C
小题1:B
小题1:D |
小题1:根据 可知选B。
小题1:根据 可知选C。
小题1:根据  可知选C。
小题1:根据 可自选B。
小题1:根据 可知选D。 |
核心考点
试题【Teeth are important. Strong, healthy teeth help you chew all kinds of foods that】；主要考察你对
科普环保类等知识点的理解。
[详细]举一反三
1970 was the World Conservation(保护)Year. Everyone must know that the world is in danger. 16 is one example of the 17 .At one time there were 1,300 different kinds of trees and flowers in Holland(荷兰),but now only 866 remain(继续存在), 18 have been destroyed by modern man. We are changing the earth, the air and the water, and 19 that grows and lives. If we go on like this , we shall destroy ourselves.
What will happen in the future? Perhaps 20 is more important to ask “What must we do now?” The people who will be living in the world tomorrow are 21 young of today. A lot of them know that conservation is necessary. Many are helping to save 22 .
Now fifteen million young people in many countries are studying 23 and the country around him. In some countries they spend much time as “conservation volunteers.” They plant trees and help to 24 wild birds and animals.
But everyone, 25 young people, must work to save our world.
| 小题2: | | A．trouble | B．question | C．problem | D．difficult |
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| 小题3: | | A．some | B．others | C．the other | D．the others |
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| 小题4: | | A．everything | B．nothing | C．something | D．all things |
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| 小题7: | | A．ourselves | B．our world | C．our lives | D．living things |
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| 小题8: | | A．man | B．men | C．a man | D．the men |
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| 小题9: | | A．find | B．protect | C．catch | D．keep |
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| 小题10: | | A．not only | B．except | C． also | D．together with |
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No Car Day was first started by 34 cities in France on September 22, 1998. It was started to protect the environment. By now, more than 1,000 cities around the world have had a No Car Day.
The first No Car Day in China was in Chengdu in 2001. Other cities including Taipei, Shanghai and Wuhan, also support the day.
In Beijing, more and more people are taking part in the activity. It asks drivers to leave their cars at home for one day each month and walk or ride a bike to work. It also calls on Beijingers not to use cars on June 5th (World Environment Day). The slogan(口号) for the day is, “ If we drive for one less day, we can have one more nice day.”
So far, more than 200,000 drivers have shown their support. “We can’t control the weather, but we can choose not to drive,” said Wu Zhonghua, a car club chairman. Beijing is trying to have 238 blue sky days this year. In the first quarter of 2007, Beijing only had 52 blue sky days. This was 11 days less than the number for the same period last year. Much of the dust comes from the desert, but cars cause most of the air pollution. We must do more for No Car Day.
小题1:No Car Day was started _______.| A．to save money | B．to control the weather | | C．to make the air cleaner | D．to keep out dust from the desert |
小题2:The No Car Day activity asks Beijing drivers _______.| A．to work hard to get fewer blue sky days | | B．not to work on World Environment Day | | C．to ride a bike or walk instead of driving to work once a month | | D．to leave their cars at home for a week each month |
小题3:When is World Environment Day?| A．On July 5th. | B．On June 5th. | | C．On September 22nd. | D．On February 2nd. |
小题4:Which of the following about No Car Day is WRONG?| A．It was started in France in September, 1998. | | B．It was first started in China in 2001. | | C．It is supported by over 1,000 cities around the world. | | D．It was first started by a car club chairman in Beijing. |
小题5:What can we infer(推断) from the passage? | A．More and more people in Beijing are joining car clubs. | | B．People will have one more World Environment Day each month. | | C．More and more people won’t drive on No Car Day in Beijing. | | D．The car club chairman Wu Zhonghua won’t drive any more. |
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The teacher stood before his class of 30 students and was going to hand out the final exam papers．“I know how hard you have all worked to get ready for this test．” he said．“And because I know you are all able to understand these questions．I am ready to offer a B to anyone who would prefer not to take the test．’’
A number of students jumped up to thank the teacher and left the classroom．The teacher looked at the rest students and said．“Does anyone else want to get a B? This is your last chance．”Two more students decided to go．Seven students stayed．The teacher then handed out the papers．There were only three sentences on the paper： Congratulations! You have received an A in this class．Keep believing in yourself．
I never had a teacher who gave a test like that．but I think that it is a test that any teacher could and should give．Students who do not have confidence in what they have learned are B students at most．
The same is true for students in real life．The A students are those who believe in what they are doing because they have learned from both successes and failures．They have learned life’ s lessons, whether from school education or from events in their lives，and have become better people．Scientists say that by the age of eight，80% of what we believe about ourselves has already been formed．You are a big kid now and you realize that you have some limits(局限)．However，there is nothing you can’t do or leant to be．Sir Edmund Hillary, the first person to reach the top of Mount Qomolangma (珠穆朗玛峰)said，“We do not conquer the mountain．but ourselves．”
小题1:Some students left the classroom because_____| A．they were happy with the grade the teacher would give them | | B．they were allowed to take another easier exam later on | | C．they knew the teacher didn’t like them to take the test | | D．they thought the exam was so easy that they don’t need to have a try |
小题2:The teacher gave the rest students an A because______| A．they answered all the questions in the exam correctly | | B．they didn’t believe themselves | | C．they believed themselves in what they had learned | | D．they had been working hard for each exam |
小题3:The underlined word “conquer’’ means ______ in the passage.小题4:What does the writer want to tell us in the passage? | A．He wants us to know what our limits are． | | B．He wants us to learn to believe in ourselves． | | C．He wants us to receive school education． | | D．He wants us to1earn from B students． |
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What’s the red star in the sky through a telescope(望远镜)? It is Mars. Do you want to know more about it? Take the “Mars Orbit Express”!
“Mars Orbit Express” is a space probe (探测器). It was sent towards Mars by American scientists on August 12th，2005. Its tasks are to study Mars’ atmosphere and return photos to Earth. But before that “Mars Orbit Express” must travel about 100 hundred million kilometers and seven months. It reached Mars’ orbit(轨道)in March，2006.
Mars and Earth have similar weight and size. However，Mars is closer to the sun than Earth. Mars is very cold. The average temperature is below 50℃. The temperature at noon only reaches 20℃ during a Mars day. Its atmosphere is mostly CO2. It has much sand and two moons---Phobos and Deimos.
Scientists think Earth and Mars had similar beginnings 4.6 billion years ago. But while Earth supports millions of lives，Mars becomes bad. “Earth easily could have turned out like that.” said an scientist, “It is important for us to find out why and Mars Orbit Express’ should do that.” “Mars Orbit Express” also would help scientists to learn what might happen to Earth in the future. “Mars Orbit Express” would work for about four years.
小题1: What can you see through a telescope when watching Mars? ________.| A．Much sand | B．A red star | C．Its atmosphere | D．Its size |
小题2:One of the tasks of Mars Orbit Express is _______. | A．taking pictures of Mars | | B．studying the weight of Mars | | C．finding out distance between Earth and Mars | | D．telling the time it takes to go from Earth to Mars |
小题3:Compared with Earth，_______.| A．Mars has a long history | B．Mars is big and heavy | | C．Mars is close to the sun | D．Mars’ atmosphere is mainly O2. |
小题4: Which might be the proper title for the passage?| A．Mars：differences from Earth | B．A probe：to learn more about Mars | | C．Mars: change of temperature | D．A probe：to tell the future of Earth |
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 Smoking in indoor public places including public working places, public transport vehicles and some other special outdoor working places has been banned(禁止)in China since January 2011.Let’s look at the following advantages of banning smoking.
First, banning smoking will not only help in saving smokers from health problems and diseases, but will also be good for passive(被动)smokers. When the smoker is smoking in a restaurant, the people around him are sure to breathe in the smoke and suffer from the diseases an active smoker gets. If smoking is banned, spread of these diseases can be controlled.
Next, banning smoking will put stress on smokers to give up. Since a smoker is prevented from smoking, he will learn how to live without smoking for long hours. When a smoker doesn’t smell or see anybody around him smoking, it might reduce his wish to smoke too. As a result, people have to give up smoking.
Smoking in public places influences non-smokers to start smoking, especially adolescents. When teens see people around them smoking, they will follow them easily. Thus the number of teen smokers will increase. Also asthma(哮喘)and other problems are often seen in children living around smokers. So if it is banned, these places will become safe for children and teenagers.
Looking from the economic point of view, smoking should be banned to increase work productivity(生产率).Employees(雇员)who smoke usually take breaks to smoke while working. So the number of hours they put in their work is smaller.
If you see from the environment point of view, smoking should be banned. Smoking causes air pollution. If it is banned, it will help keep the environment from getting worse.
小题1:________doesn’t belong to a non-smoking place.| A．A field | B．A hospital | C．A library | D．A restaurant |
小题2:The second paragraph mainly wants to tell us ______.| A．banning smoking is good for restaurants | | B．banning smoking is good for non-smokers | | C．banning smoking is good for spread of diseases | | D．banning smoking is good for active smokers and passive smokers |
小题3:How many advantages of banning smoking are mentioned in this passage?| A．Two. | B．Four. | C．Five. | D．Six. |
小题4:According to the text, the underlined word “adolescents” means ______.| A．men | B．women | C．adults | D．teenagers |
小题5:Which of the following statements in NOT true?| A．If smoking is banned, work productivity will increase. | | B．If smoking is banned, the number of teen smokers will be larger. | | C．If smoking is banned, it will make the environment become better. | | D．If smoking is banned, smokers will learn how to live without smoking. |
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