A.Because scientists like mosquitoes.B.Because mosquitoes adapt quickly and can change

外语类 成人英语三级 已帮助 人

A.Because scientists like mosquitoes.

B.Because mosquitoes adapt quickly and can change their body chemistry.

C.Because the medicine against mosquitoes is of bad quality.

D.Because there are too many mosquitoes.

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗