在分子生物学实验中,常使用微量移液器,请说明在使用微量移液器时需要注意什么？

A．盛放废移液管的容器可以放在生物安全柜

B．不能向含有感染性物质的溶液中吹入气体

C．污染的移液管应该完全浸泡在盛有适当消毒液的防碎容器中

D．所有移液管应带有棉塞以减少移液器具的污染

简述免疫学检验技术发展历程中有哪些主要技术类型。

A. 实验动物饲育学

B. 实验动物医学

C. 比较医学

D. 动物实验技术

此题为判断题(对，错)。

生命科学发展经历了哪几个阶段?

A.实验生物学

B.描述生物学

C.分子生物学

D.结构生物学

E.创造生物学

F.新兴生物学

Jim: I’ve had a lot of trouble getting through to you. Your call centre wouldn’t put me through. Clerk: I’m sorry. We’ve been very busy this morning. Please explain the problem, and I’ll see what I can do. From the conversation above, we know Jim has the problem about________.

A．the phone

B．calling

C．center

Jim: I’ve had a lot of trouble getting through to you. Your call centre wouldn’t put me through. Clerk: I’m sorry. We’ve been very busy this morning. Please explain the problem, and I’ll see what I can do. 20. From the conversation above, we know Jim has the problem about________.

A．thephone

B．calling

C．center