题目内容

An antifreeze is a liquid that is added to water to keep it from freezing. When water freezes and becomes into ice, it expands. The force of water of expanding is so great that it can break the hardest metal. Water is used in car engines to keep them cool while they run, and if this water is allowed to freeze in winter it can break the iron block of the engine. That is why antifreezes are necessary.
Water freeze at zero centigrade; the usual kind of antifreeze will not freeze until the temperature is 40℃ below zero. A mixture of five parts of water and four parts of antifreezes will prevent freezing at 18℃ below zero; four parts of water and five parts of antifreeze reduce this to 22℃ below zero.
Alcohol is a good antifreeze, but when the car is running it turns hot and the alcohol bums away, so it must be replaced very often. Most persons use antifreezes that do not boil away when the engine is running. There are many chemicals that do this. One of the most popular is called ethylene glycol, which is sold under various trade names such as Preston and Xerox.
The text is written_________.

A. to help to sell antifreezes
B. to explain what antifreezes are
C. to compare ethylene glycol with alcohol
D. to tell what kind of antifreeze to choose

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【B3】

A. is not allowed
B. is allowed
C. were not allowed
D. were allowed

【B17】

A. a little smaller
B. a little larger
C. much smaller
D. much larger

听力原文：M: How did you like Egypt？
W: Oh, perfect. It’s one of the most interesting places I've ever seen.
M: Where did you go？
W: Well, we spent most of the time in Cairo and Luxor.
M: What's there to see in Cairo？
W: Well, not all that much, in fact, but there is the museum and the pyramids, and that’s really something.
M: What's the city like？
W: It's very large, and the streets are always noisy and dirty.
M: I thought you liked it.
W: Well, I did in a way. It’s very different, but I liked Luxor better. Luxor’s a little town right on the banks of the Nile. It’s very quiet and peaceful and much cleaner than Cairo. And actually I did more sightseeing there.
M: Did you buy anything？
W: Oh, sure. There are some excellent shops in Luxor with all sorts of interesting things. A lot better than Cairo, in fact, I bought a gold necklace. Want to see it？
M: Sure.
Which country did the woman visit？

A. Egypt.
B. Cairo.
Cairo and Luxor.

第一节单项填空
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
Japan is ____________ the east of China, with the Yellow Sea in between.

A. in
B. at
C. on
D. to