39.I think you should have let him finish his speech, ________you disagreed with him. A.whatever B.no matter what C.wherever
(9分)在应用电磁打点计时器探究匀变速直线运动规律的实验中,得到了一条如图所示的纸带。按时间顺序取O、A、B、C、D、E、F七个计数点,每相邻的
My younger cousin is now on ______ diet. She is trying to lose ______ weight. A. \; \ B. the; the C. a;﹨ D. the; a
数列满足,那么的值为( ). A.4 B.8 C.15 D.31
湖北省近年来实行稻田免耕、稻草全程覆盖种植马铃薯新技术,具体做法是水稻收获后在免耕的稻田土面上摆放马铃薯种,然后覆盖稻草。据此回答10~
、某同学在“研究动滑轮特点”的实验时,进行了正确操作,并记录数据如下表, 分析数据后发现,实验结果与课本中“使用动滑轮能省一半力”的结论
is quite obvious that there is no water on the Mars. A. There B. It C. That D. This
下列物质不能由单质直接反应得到的是()。A.HCl B.Fe3O4 C.PCl3 D.FeCl2