mRNA上密码子为pCAG,则与之对应的tRNA上反密码子为pATG。()
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He put the big box down on the floor, _______ (breathe) heavily and _________ (look) exhausted.
________ (consider) the importance of the experiment, they checked the result again and again.
This same thing, _________ (happen) in the peace time, would be a great disaster.
We introduced a lot of advanced devices, thus _______ (save) much time and labor.