根据运算定律填空． a+18=□+□；m×2.5×0.4=□×（□×□）；（a+_爱下问搜题

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问题填空题

根据运算定律填空．

a+18=□+□；m×2.5×0.4=□×（□×□）；（a+b）×C=□×□+□×□；m-a-b=□-（□+□）．

答案

①a+18=18+a；

②m×2.5×0.4=m×（2.5×0.4）；

③（a+b）×c=a×c+b×c；

④m-a-b=m-（a+b）．

故答案为：18+a，m×（2.5×0.4），a×c+b×c，m-（a+b）．

填空题

根据句子意思，从方框中选用恰当的词或短语填空。

stronger, grew into, by, quarrel with, fewer, at the same time, looked up, never, realized

小题1:My school has          weeks off in the summertime than Daniel’s school.
小题2:Xi Wang          a healthy young giant panda and weighed 35 kilograms.
小题3:Daniel is very clever, but he          shows off.
小题4:This CD-ROM helps you learn English          testing your knowledge of English grammar and vocabulary.
小题5:To tell you the truth, sometimes I          my cousin Shirley.
小题6:You can’t sneeze and keep your eyes open         .
小题7:Later, the government          it was a very serious problem and took action to reduce the pollution.
小题8:The spirit of the Olympics is “Swifter, higher,         .”

判断题

旋涡泵有叶轮。