试题与答案

The monitor suggested that we ______ for

题型:选择题

题目:

The monitor suggested that we ______ for a picnic on Sunday.

A.went

B.must go

C.could go

D.go

答案:

答案:D

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题型:单项选择题

已知豌豆红花对白花、高茎对矮茎、籽粒饱满对子粒皱缩为显性,控制它们的三对基因自由组合。以纯合的红花高茎籽粒皱缩与纯合的白花矮茎籽粒饱满植株杂交,F2理论上为()

A.12种表现型

B.高茎籽粒饱满∶矮茎籽粒皱缩为15∶1

C.红花籽粒饱满∶红花籽粒皱缩∶白花籽粒饱满∶白花籽粒皱缩为1∶1∶1∶1

D.红花高茎籽粒饱满∶白花矮茎籽粒皱缩为27∶1

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