According to the passage, successful game strategy depends on ______.
A. the ability to adjust one's behavior in light of the behaviors of others
B. the ability to obey the rules with high flexibility
C. teamwork and cooperation with others
D. the ability to keep a dynamic stability
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UCC、UGU可编码半胱氨酸属于密码的
A. 摆动性
B. 通用性
C. 连续性
D. 简并性
E. 特异性
RNA聚合酶中识别模板转录起始部位的亚基是
A. 内含子
B. 多顺反子
C. RNA聚合酶Ⅱ
D. 原核RNA聚合酶口
E. 多聚A聚合酶
蛋白质合成的启动和肽链延长都需要的是
A. 氯霉素
B. GTP酶
C. 转肽酶
D. 蛋白激酶
E. 链霉素
I didn't see him in the meeting room yesterday. He ______ at the meeting.
A. mustn't have been
B. shouldn't have spoken
C. needn't have spoken
D. need not doing