扩增产物是多条带时可采用的PCR产物分析法（） A.凝胶电泳分析法 B.点杂交分析

If he had spent more time practicing speaking English before, he _____ able to speak it much better now.

A．will be

B．would be

C．has been

D．would have been

SAMPLES

The following items must be sent by DHL, prepaid, and will advise dispatch details to the buyer immediately.

移动性浊音阳性，提示腹水量

A．500ml以上
B．1000 ml以上
C．1200 ml以上
D．1500ml以上
E．800ml以上

真菌的有性生殖过程一般经过（）和（）等三个时期，最后形成单倍体的有性孢子。

那种给药途径常发生首关消除

A．舌下给药

B．直肠给药

C．口服给药

D．气雾吸入

E．肌肉注射