单项选择题
The protection of our environment is not nothing to be left to the
A B C
government. Everyone should be concerned.
D
- A.
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未知题型
在G2 期可合成( )。
A.分泌蛋白质
B．RNA
C．可溶性的蛋白激酶
D．染色体凝集因子
E．构成纺锤丝的微管蛋白 -
单项选择题
I didn't expect to receive a postcard from you! It's really __my wildest imagination.A. behind B. beyond C. except D. through
A.
A. -
单项选择题
The task is too much for me, so I can't carry on __ any longer.I must get some help.A. singly B. simply C. alone D. lonely
A.
I
B.
A.
