According to the passage students would choose the experiments and activities______.A.und

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According to the passage, students would choose the experiments and activities______.

A.under a set structure

B.in accordance with instructions

C.based on discussions

D.within a certain time frame

请帮忙给出正确答案和分析,谢谢!

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  • 正确答案:D
    语义理解题。由句(5)可知,学生在选择实验和活动时要在一定的时间范围之内。所以答案为D。