These two books are very interesting. Yo

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问题选择题

These two books are very interesting. You can choose _____ of them. [ ]

A. both

B. each

C. either

D. any

答案

答案：C

填空题

用所给单词的适当形式填空

1. Traffic in the city____(interrupt) by a snowstorm at that time.

2. Scientists____ (assume) there is no animal life on Mars.

3. Conditions for scientific research were improved greatly,____ ( accelerate) the country's scientific

and technological reform.

4. Like an Apollo,he comes and____(arrest) everyone's attention.

5. You can not just____(spit) wherever you like.

单项选择题

信度之于效度正如( )

A．准确性之于一致性

B．一致性之于准确性

C．偏差数之于常模

D．常模之于偏差数