A．The man should wait a minute.B．It's too late for the man to register.C．The man shoul
A. The man should wait a minute.
B. It's too late for the man to register.
C. The man should have done things earlier.
D. There might still be a chance even if it is the last minute.
The march to Washington, D.C. in 1963 helped the passage of two civil rights acts.
A. Y
B. N
C. NG
在蛋白质生物合成中，催化氨基酸活化的酶是______。
如果阅读框固定，一条给定mRNA的碱基顺序仅为一条肽链的氨基酸顺序编码。从像细胞色素C这样的蛋白质的一个特
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