题目

“清风不识字、何故乱翻书”诗句中清风能翻书，是因为风使书表面上空气流动速度而导致书上表面压强（选填“增大”或“减小”） 答案：【1】增大【2】减小You should try to get a good night sleep____ much work you have to do. A. however            B. whatever                C. no matter          D. although