题目内容

Until its eventual collapsethe weight of accumulated economic pressures, the system operated successfully for almost over 20 years.

A. out
B. in
C. over
D. under

查看答案

搜索结果不匹配？点我反馈

更多问题

Feelings, emotions, and desires must subordinate themselves reason because they sometimes could be irrational and biased.

A. at
B. to
C. in
D. over

下列哪种密码不编码氨基酸： ()。

A. 起始密码子
B. 色氨酸密码子
C. 甘氨酸密码子
D. 终止密码子

反密码子位于（）中。

A. mRNA
B. microRNA
C. rRNA
D. tRNA

一种氨基酸由几个密码子所编码的现象称为密码子的（）。