题目

____I sympathize with those who have gone bankrupt, I can’t really do very much to help them out of the difficulties, especially when the U．S．economy has moved into a recession． A．As long as          B．As        C．While          D．Even 答案：C将挂在弹簧秤上的物体的一半浸没在水中，弹簧秤的示数比物体未浸入水之前减少了1N，这个物体的体积是    cm3，当这物体全部浸没在水中时，弹簧秤的示数是3N，这物体重    N．