题目列表(包括答案和解析)
Directions:Read the following three passages.Each passage is followed by several questions or unfinished statements.For each of them there are 4 choices marked A,B,C and D.Choose the one that fits best according to the information given in the passage.
A
Hi, dear boys and girls! Do you know how to be a healthy kid? Here are some rules you should follow.
First, eat different foods, especially fruit and vegetables. You may have a favorite food, but you'd better eat something different, if you eat different foods, you will probably get more nutrients your body needs.
Second, drink water and milk as often as possible. When you're really thirsty, cold water is the No.l choice. Milk is a great drink that can give you more calcium your body needs to grow strong bones.
Third, listen to your body. How do you feel when you are full? When you are eating, notice how your body feels and when your stomach feels comfortably full. Eating too much will not make you feel comfortable and make you fat.
Fourth, limit screen time. Screen time is the time you watch TV, DVDs and videos, or using computers. It is good to take more exercise such as basketball, bike riding and swimming. You can't watch TV for more than two hours a day.
Fifth, be active. One thing you'd like to do as a kid is to find out which activity you like best. Find ways to be active every day.
Follow these rules and you can be a healthy kid.
1. You should eat different foods especially ___.
A. meat B. hamburgers C. sweets D. fruit and vegetables
2. Which kind of drinks can give you more calcium?
A. Juice B. Milk C. Cold water D. Tea
3. According to the passage, you should follow __rules if you want to be healthy.
A. five B. nine C. fifteen D. thirteen
4. According to the passage, which of the following is TRUE?
A. When you're eating, you don't have to notice how your body feels.
B. You can eat your favorite food as much as possible.
C. You can watch TV whenever you like to get more information.
D. We should try to live in an active way in our life.
5. Which is the best title of the passage?
A. How to make yourself important
B. How to be a healthy kid
C. How to be a popular kid
D. How to make your parents healthy
—I’m awfully sorry I can’t go with you.?
—__________?Haven’t you agreed??
A.How is it B.What is it
C.Why don’t you D.What do you think?
Don't get that ink on your shirt, for it______.
A. won't wash out B. won't be washed out
C. isn't washed out D. doesn't wash away
A Battery’s Worst Nightmare(噩梦)
Portable electronics that can be carried about easily are only as good as their batteries and, let’s face it, batteries aren’t very good, especially when compared with, say, petrol, which packs 100 times a battery’s energy into an equal space. That’s why a large group of mechanical engineers (centered at the Massachusetts Institute of Technology, but with partners at other universities and companies) are hard at work in an effort to replace batteries with a tiny engine that runs on fuel. Imagine a battery-free life!When the fuel runs out in your laptop or mobile phone, you just fill up and go.
The engine, about the size of a ten-cent coin, starts with a combustion chamber (燃烧室) that burns hydrogen (氢). Its tiny parts are etched onto silicon wafers (硅片) in the same manner that computer parts are imprinted onto integrated circuits (集成电路). The first engine is made up of five wafers. And since these wafers could be produced in much the same way as computer chips, they could probably be produced quite cheaply.
But the devil in all this nice detail is efficiency(效率). Tiny engine parts don’t always behave like their scaled-up parts of the first engine. Something between the parts can slow down the work, according to Columbia University professor Luc Frechette, one of the engine’s designers. Extreme heat from the combustion chamber is also a problem, often leaking to other parts of the engine.
The scientists’ goal is to create an engine that will operate 10 times better than batteries do. Frechette says that a complete system, with all parts in place and working, will be set up in the next couple of years, but commercial models aren’t available until at least the end of the next ten years.
1..
. According to the passage, the title suggests that ________.
A. batteries should be greatly improved B. petrol will be used instead of batteries
C. the time of batteries will be gone forever D. pollution caused by batteries must be prevented
2..
What’s the meaning of the underlined word “devil” (In Paragraph 3)?
A. Problem. B. Advantage. C. Invention. D. Technique.
3..
What can we infer from the passage?
A. The new invention doesn’t need any fuel.
B. The new engine has been produced in quantity.
C. The new invention is much cheaper than the battery.
D. The new engine needs to be improved before it’s on sale.
4..
. What is the main purpose of this passage?
A. To introduce a new invention to readers. B. To persuade readers not to use batteries.
C. To show us how the new invention works. D. To declare when the engine will be on sale.
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