单项选择题
A．始终 B．始终 C．始终 D．始终
The noun bear and verb bear are（）A. homophones B. homog...
单项选择题The noun bear and verb bear are（）
A. homophones B. homographsC. homonymsD. allophones
You shouldyour stupid ideas, otherwise you'll regret in...
单项选择题You shouldyour stupid ideas, otherwise you'll regret in the future.()
A. put down B. put away C. put aside D. put out
原位核酸分子杂交用核酸探针有（）A．DNA探针B．cDNA探针C．RNA探针D．cRNA探针E．以上都是
单项选择题原位核酸分子杂交用核酸探针有（）
A．DNA探针 B．cDNA探针 C．RNA探针 D．cRNA探针 E．以上都是
