题目

某同学用竖直向上、大小为150N的力提一个放在水平地面上重450 N的物体,那么地面对物体的弹力和物体受到的合力大小分别是A.600 N,600 N      B.450 N,300 N      C.300 N,0N    D.600 N,0 N 答案:C______ made the school proud was ______ more than 90% of the students had been admitted to key universities. A. What; because                       B. What; that C. That; what                          D. That; because  
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