题目

This is a reading room, boy. You must act in a way         won’t disturb others. A.in which        B.it             C.which          D.as 答案:C六(1)班同学采集植物标本和昆虫标本共70件,植物标本的件数是昆虫标本的40%,两种标本各采集了多少件?(用方程解)
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