題目列表(包括答案和解析)
Imagine the situation. You are driving a car along a desert or on a mountain. You have no idea you are. You passed the last house two hours ago. Then your breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a with you. This invention may be able to help you. It is a device(裝置) which uses satellites to find the user’s position(位置). It can find your position to within 20 metres. A GPS cannot start your car, but at least you will where you are.
GPS, which means Global Positioning System, is a small receiver. It looks like a mobile phone. You can hold it in your hand, or put in your pocket. It is sometimes put into a watch or a . We also find GPS devices in cars, planes, or boats. Some of these devices have electronic , so you know where you are. For example, in a city they can tell you the name of the .
There are parts to the Global Positioning System. The first part is the . You can either hold it in your hand have it fixed into your car, plane, etc. The second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates(計算) its position. The third part of the system is a network of ground stations. They are all over the world. They the satellites and make sure they are working well.
Some people think that in the future the GPS will be
as as the mobile. They are
becoming and more and more accurate(精確的). The
re
are also new uses for the GPS. Perhaps they will become like .
Everyone will have one and you will never be lost again.
1.A.where B. what C. who D. how
2.A.ship B. car C. train D. plane
3.A.watch B. ring C. clock D.GPS
4.A.advise B. know C. represent D. speak
5.A.radio B. TV C. robot D. machine
6.A.room B. office C. road D. mobile phone
7.A.parts B. maps C. video D. music
8.A.studio B. teenager C. bus D. street
9.A. five B. four C. three D. two
10.A. sender B. receiver C. Internet D. system
11.A.and B. then C. but D. or
12.A.control B. achieve C. allow D. imagine
13.A.expensive B. special C. new D. common
14.A. cheaper B. easier C. more expensive D. bigger
15.A.computers B. robots C. satellites D. watches
| 完形填空。 | ||||
| Here's a good way to find out where you need the most improvement: check your report card. Don't just look at the 1 . Check the comments your teachers write about each 2 . Very often when students 3 report cards, they check their marks very quickly. Then they stop 4 and put them away. However, this is not right. Your report cards may 5 comments from each teacher. These comments are more useful than the grades. Not all comments by teachers are useful. Some have a common 6 of how the class has studied in the 7 term.There may be only a few 8 on your own work, and sometimes such comments are mainly written about which sometimes teachers' 9 comments are written in a kind of secret code (代碼) that I 10 "report-speak". For example, "George has a good understanding of…" It 11 good. But in fact, a "good" understanding may be the third, or fourth best result below "excelent" and "very good". 12 you realize this, "good understanding" isn't so good any more. Because comments on the reportcard don't 13 have the information you're looking for, the 14 way to discover where you most need to improve is to ask your teachers 15 if you want to use your report card better. | ||||
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I don't think it's polite to_______ others when they are talking.
A. advise B. disturb C. hate D. accept
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