江泽民同志认为，党的全部任务和责任，就是实现民族复兴
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江泽民同志认为，坚持党的领导，核心是党的纯洁性。
A. 对
B. 错
Once cosmids are inside the E.coli cells, they don’t generate phage but are propagated as plasmids.__________
A.True
B.False
Which size of the insert is accepted by the cosmids? __________
A. 10-20 kbp
B. 35-45 kbp
C. 50-60 kbp
D.100-120 kbp
The plaques formed by M13 infection are called as __________
A.retarded plaques
B.true plaques
C.pseudoplaques
D.lysogenized plaques
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