— At 10:00 last night.
A:did, finish
B:does, finish
C:is, finishing
D:do, finished
A (n) is a group of words whose meaning is different from the meaning of each word understood on its own.
人类白化病是由隐性基因(a)控制的一种遗传病.分析下面的白化病遗传图解,请说明11号个体可能的基因组成是( )
两个数都是质数,这两个数一定是互质数.