He went down into the cold water and aft_爱下问搜题

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问题选择题

He went down into the cold water and after ________seemed a long time, he came out．

A．that

B．what

C．which

D．it

答案

答案：B

填空题

根据乘法的运算定律填空．

3.12×0.5=□×□

12.5×8.7×0.8=（□×□）×□

（2.5+0.6）×4=□×□+□×□

4.1×1.5+5.9×1.5=（□+□）×□

填空题

商品等级B2的可销天数为（）。