The experimudent's will extend the student's knowledge of nature.
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The structure of the family is quite different from one country to another.
A. 对
B. 错
The traditional family was a nuclear family and the modern family is,too.
A. 对
B. 错
They_the child day and night.
A. cared for
B. take on
C. look at
D. find on
It isa pity when friends _up over trifles.
A. split
B. separate
C. breaking
D. cause
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