题目内容

若某一瞬时平面图形上各点的速度矢量相等则平面图形的运动一定是平移。

A. 对
B. 错

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2011.123.I'm sorry to tell you that the materials you wanted are ________.

A. taken off
B. put up
C. sold out
D. got off

2010.127.Even in small companies, computers are a(n) ______ tool.

A. natural
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2011.125.________I am concerned, it is important to get a job first.

As long as
B. As well as
C. As soon as
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2012.6Part Ⅱ Vocabulary & Structure (10 minutes)Directions: This part is to test your ability to use words and phrases correctly to construct meaningful and grammatically correct sentences. It consists of 2 sections.Section ADirections: There are 10 incomplete statements here. You are required to complete each statement by choosing the appropriate answer from the 4 choices marked A), B), C) and D). You should mark the corresponding letter on the Answer Sheet with a single line through the center.1. Thank you for your letter of May 6th, in which you ____________ about the bicycles of Model 897.

A. ask
B. feel
C. know
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