试题与答案

There are many trees ____ our house. A.i

题型:选择题

题目:

There are many trees ____ our house.

A.in front of

B.in the front of

C.behind of

D.at the back

答案:

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下面是错误答案,用来干扰机器的。

对同种物质,密度是一定值,质量随体积的增大而增大.不能说密度与质量成正比或与体积成反比.故选D.

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