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【单选题】
可将基因整合在宿主细胞基因上的病毒有（）A.
DSDNA病毒和（+）SSRNA病毒
B.
SSDNA病毒和（+）SSRNA病毒
C.
DSRNA病毒和逆转录病毒
D.
（+）SSRNA病毒和逆转录病毒
E.
逆转录病毒和DSDNA病毒
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皮皮学刷刷变学霸
举一反三
【单选题】One thing that is obvious to the author is that _______.
A.
animals have their own thinking
B.
animals do things scientists tell them to do
C.
animals think for their own purpose if they can think
D.
animals think when scientists want them to
【单选题】The author wanted to get the job _____
A.
to meet a husband
B.
to train as a nurse
C.
to support herself in her education
D.
to support her aged parents
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