But not all pretended deeds have to fallshort of their normal function in order to ______ their communication purpose.
A. serve
B. succeed
C. complete
D. accomplish
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Next summer after taking the nationalentrance examination, ______ I′ll stay in Hainan Island, will surely be anexciting holiday.
A. when
B. which
C. that
D. where
______ difficulties we may come across,we′ II help one another to overcome them.
A. Wherever
B. Whatever
C. However
D. Whenever
Not that John doesn′t want to help you,______ it′ s beyond his power.
A. but that
B. for that
C. and that
D. in that
1838--1839年,施莱登和施旺提出了()
A. 进化学说
B. DNA双螺旋结构
C. 分离定律
D. 细胞学说