题目内容
Do you know that you can use your watch as a compass (指南针) on a sunny day? Take a watch and point the hour-hand in the direction (方向) of the sun. Imagine a line which runs from the center of the watch through a point half-way between the hour-hand and number one. This line will surely point south.
If you know astronomy a little, you will understand why this works. In the northern half of the earth, the sun is in the south at noon. In Russia, the real noon is one o’clock. If at that time we point the hour-hand at the sun, the hour-hand and number one will point south. That is why you must imagine a line which will run from the center of the watch through a point half-way between the hour-hand and number one. It will point south. If you are in the southern part of our planet, you must point number 12 at the sun. The line which you can imagine between number twelve and the hour-hand will then show south.
59. When we carry out this experiment in the northern part of the earth, we should point _____ at the sun.
A. number 12 B. the minute-hand C. the hour-hand D. number one
60. The passage tells us that we can use a watch on a sunny day ______.
A. to study the weather B. to show direction C. to enjoy ourselves D. to keep good time
61. If you are in Australia, which of the following is the right way to show north?
62. What’s the best title for this passage?
A. Your Watch Becomes a Compass B. An Interesting Watch
C. The Story of a Watch D. The Sun and a Watch
【小题1】C
【小题2】B
【小题3】D
【小题4】A
___ is the most useful invention?
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A.Do you think which of these |
B.Which of these you know |
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C.Which of these do you know |
D.You know which of these |
Do you know the stages every inventor must ________ before they can have their invention________ .
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A.go through; approve |
B.go through; approved |
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C.get through; approval |
D.look through; approved |