题目

More and more high-rise buildings have been built in big cities _______ space.    A. in search of          B.in place of    C. for lack of          D. for fear of  答案：C甲、乙、丙三个相同柱状容器内分别盛有质量相等的不同液体，将质量相等的实心铜、铁、铝球（已知ρ铜＞ρ铁＞ρ铝）分别浸没在液体中，此时液面等高，则液体对容器底的压强A.p甲＜p乙＜p丙B.p甲=p乙=p丙C.p甲＞p乙＞p丙D.p甲=p乙＞p丙