单项选择题
A transfer RNA molecule is used in translation and cons...
判断题 A transfer RNA molecule is used in translation and consists of a single RNA strand that is only about 80 nucleotides long.()
下面哪些是选择性作用于COX-2的非甾体抗炎药( )A. 尼美舒利B. 帕瑞昔布、C. 羟布宗D. 芬...
多项选择题下面哪些是选择性作用于COX-2的非甾体抗炎药( ) A. 尼美舒利 B. 帕瑞昔布、 C. 羟布宗 D. 芬布芬 E. 噻来昔布
What are the five kinds of Mongolian animals?A. cows, ...
多项选择题What are the five kinds of Mongolian animals? A. cows, sheep, B. horses, goats, camels C. horses, goats, pigs