亡羊补牢
守株待兔
猜你喜欢
- 1the young man sat there smoking,_____ of sorrow
- 22.乙数是甲数的、乙数之和的( )% 3.甲数比乙数少( )% 4.乙数比甲数多( )%
- 3这句话应该是we are look forward to seeing you again,还是we are looking forward to seeing you again
- 4一个袋中装有1个红球,1个黑球和1个黄球,它们除了颜色外都相同,从中任意摸出一球,记录下颜色后又放回袋中;充分摇匀后,再任意摸出一球,记录颜色后又将它放回袋中;再一次充分
- 5纠结的题目,老师,what happened to your sister?
- 6请用恰当的图表形式表现细胞、细胞核、染色体、DNA之间的层次关系.
- 7体积为VmL,密度为ρg/cm的溶液,含有摩尔质量为M的溶质mg,其物质的量浓度为c mol/L,溶质的质量分数为ω%.
- 8国航CA939 北京时间13:30起飞,北京时间几点到达?
- 9乙数的5分之1与甲数相等,是把( )看作单位“1”,数量关系式:( )乘以5分之1等于( )
- 10There are many people here.Some are playing cards.____ are playing beach volleyball.