A:都属于无性生殖,能保持母本性状
B:三者都用到胚胎移植技术
C:都充分体现了体细胞的全能性
D:都不会发生基因重组
We must tell LiMing that he is____
_______he had failed many times, he didn't give up and succeeded in the end.
数轴上到原点的距离等于4的数是 ____
如图,AB∥CD,∠C=80°,∠CAD=60°,则∠BAD的度数等于 ( )