选择题:50. Selecting a mobile phone for personal use is n

题目内容:
50. Selecting a mobile phone for personal use is no easy task because technolgy ___so rapidly. 选择一款个人使用的手机不是一件容易的事,因为科技正高速发展。
A. is changing
B. has been changed
C. will have changed
D. will change
参考答案:

广告宣传是一种有偿的,以大众媒介为媒介的劝服性活动。

广告宣传是一种有偿的,以大众媒介为媒介的劝服性活动。

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88. You _________ buy some reference books when yo

88. You _________ buy some reference books when you go to college.A.mustB.will h

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25. A sudden noise of a fire-engine made him _____

25. A sudden noise of a fire-engine made him _____ to the door.A. hurryingB.

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变种的拉丁学名的缩写是( )。A.subsp.B.ssp.C.var.D.f.

变种的拉丁学名的缩写是( )。A.subsp.B.ssp.C.var.D.f.

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