评论
打印
1.My cat would not have bitten the toy fish, ___ it was made of rubber.
A.if she has knownB.she should have known
C.if she knew
D.had she known
2.___ are inert outside living cells, but within the appropriate cells they can replicate,causing viral diseases in the organism.
A.VirusesB.That viruses
C.Viruses, which
D.Despite viruses
3.___ your body does after the stimulus has acted is called the response.
A.WhenB.How
C.What
D.That
4.___, astronomy is a field in which amateurs can make significant contributions.
A.Not only most other sciencesB.In most other sciences
C.However most other sciences
D.Unlike most other sciences
5.Take your handbag and hang it ___ you can find enough space.
A.whichB.in which
C.wherever
D.whether
