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【单选题】
在△ABC中，已知cosA= 4 5 ，sinB= 12 13 ，则cosC=（ ）A.
16 65
B.
- 16 65
C.
- 16 65 或 56 65
D.
16 65 或 56 65
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举一反三
【单选题】To the sea captain's surprise, he found that ________ travel could also be quite pleasant.
A.
earth
B.
land
C.
ground
D.
playing
【单选题】He found it quite impossible to learn _____ well in less than 6 months so he registered for the
A.
247. He found it quite impossible to learn _____ well in less than 6 months so he registered for the next semester(term). A．Russian
B.
Russians
C.
Russia
D.
Russias
【单选题】Because he was tall and strong we found it quite easy to ______ him.
A.
recognize
B.
average
C.
design
D.
monitor
【简答题】A．It is quite general. B．Most of the information he needs will be found in newspapers, C．She thinks he should change it. D．It should take a very short time to find material on it.
【简答题】Clever as he was, he found ______ in solving the problem. A) a few of difficulties B) quite a little difficulty C) less difficulty D) more difficulty
【简答题】假设你要李华，写信给英国朋友Tim，问他是否愿意租房子给你的好友李明，并介绍他的情况，内容包括： 1.品学兼优，将去伦敦某大学学习计算机; 2.喜爱读书、看电影、听音乐，乐于助人，定能融洽相处; 3.愿意提供更多信息。 注意： 1.词数应为100左右; 2.生词：租房子rent a room。 Dear Tim, Yours, LiHua
【简答题】A．It is quite general. B．Most of the information he needs will be found in newspapers. C．She thinks he should change it. D．It should take a very short time to find material on it.
【简答题】A．It is quite general. B．Most of the information he needs will be found in newspapers, C．She thinks he should change it. D．It should take a very short time to find material on it.
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