—Tell us something about Canada, OK?
—I’m sorry. _________ Jack _________ I have ever been there.
A:Either; or
B:Not only; but also
C:Both; and
D:Neither; nor
甲
乙
白天
33℃
傍晚
12℃
22℃
豌豆的高茎为显性基因(用D表示),矮茎为隐性基因(用d表示),下列亲本组合中可能出现矮茎的是( )