如图,△ABC内接于⊙O,AB为⊙O的直径,D为⊙O上一点(位于AB下方),CD交AB于点E,若∠BDC=45°,BC=6√2,CE=2DE,则CE的长为( )
如图,△ABC内接于⊙O,AB为⊙O的直径,D为⊙O上一点(位于AB下方),CD交AB于点E,若∠BDC=45°,BC=6√2,CE=2DE,则CE的长为( )
We have spent _____money on English books .
如图,AM∥BN,∠ACB=90°,∠MAC=35°,则∠CBN度数是( )
某班50名学生一周阅读课外书籍时间如下表所示:
时间/h | 6 | 7 | 8 | 9 |
人数 | 7 | 18 | 15 | 10 |
那么该班50名学生一周阅读课外书籍时间的众数、中位数分别是( )
The best way to make sure that you can keep fit is to ____healthy eating habits.
如图所示的几何体是由5个完全相同的小正方体搭成的,它的左视图是( )
I am sorry I didn`t do a good job.
Never mind. ______ ,you have tried your best.
据相关研究,经过40min完全黑暗后,人眼对光的敏感性达到最高点,比黑暗前增加25000倍,将数据25000用科学记数法表示为( )
If a man ______succeed, he must work as hard as he can.