The old people believe that ______.
A. the old values they have kept to should also change with the advancing society
B. they know more because they have experienced much more of life
C. young people are good successors to their ideals
D. young people should not continue to live the way they did
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Strange things happen to time when you travel because（）
A. no day really has twenty-four hours
B. the earth is divided into time zones
C. time zones are not all the same size
D. no one knows where time zones begin
If we had known the basic principles，we should have controlled the process ever better．（）
A. 如果我们认识这些基本理论，我们就能更好的控制这个程序了。
B. 假如我们了解这些基本原理，我们应该早点控制这个过程。
C. 如果我们见过这些基本原理，那么我们必须更早一点控制这个程序的使用。
D. 如果我们早知道这些基本原理，我们就会更好的控制这个程序了。
In communication one may shift from formal English to informal English or from standard English to non-standard English. This is known as ______.
A. code-switching
B. language planning
C. politeness strategies
D. bilingualism
Quite a number of the students in our class were criticized in public by the teacher because they hadn't handed in their homework in time.（）
A. 我们班上有不少学生因为没有按时交作业而受到教师的当众批评。
B. 很多同学在我们班上被老师公开批评因为他们没有及时交作业。
C. 我们班上有大量的学生被老师严厉的批评，因为他们没有按时交作业。
D. 一些学生在班级里被老师公开指责，因为他们没有在规定时间内答完试题。
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