题目

体育锻炼用的一个实心铅球的质量是4kg,经测量它的体积是0.5dm3 , 则该铅球的密度为kg/m3 , 若该铅球是纯铅做的,铅的密度是11.3×103kg/m3 , 质量应为kg。 答案:【1】8×103【2】5.65Although I admire you _____ your work on soil,I think you should apologize the villagers for the water pollution. A.for;to B.to;for C.for;for D.to;to
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