题目内容
【题目】Many junior school students said the maths problems were difficult to _______.
A.try out
B.work out
C.look up
D.work up
【答案】B
【解析】句意：许多初中生说数学问题很难解决。try out试验；work out解决；look up查找，往上看；work up逐步建立。根据句意可知B正确。
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题目内容
【题目】Many junior school students said the maths problems were difficult to _______.
A.try out
B.work out
C.look up
D.work up
【答案】B
【解析】句意：许多初中生说数学问题很难解决。try out试验；work out解决；look up查找，往上看；work up逐步建立。根据句意可知B正确。