The child Was terribly frightened of school in his early school days,but he soon __________ it.
A. got of
B. got away
C. got across
D. growth
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色氨酸和甲硫氨酸都只有一个密码子。 ( )
A. 对
B. 错
__________ Plastics, the machine is light in weight.
A. To make of
B. Having made
C. To be made of
D. Made of
Cot1/2与基因组大小相关。 ( )
A. 对
B. 错
三种RNA必须相互作用以起始及维持蛋白质的合成。 ( )
A. 对
B. 错