林护士准备给病人进行肌内注射，手可接触的无菌注射器及针头的部分是A．针栓、活塞柄 B

—Brain, did you have a good time during the holiday?

— ______. I had to do homework most of the time.

A．No doubt

B．Why not

C．Forget it

D．Not really

每分通气量

England is _______ France by the channel.

A．separate from

B．separated from

C．separated into

D．divided into

学制

概念图的特征表现在（）。

A.概念图不包含交叉连接

B.概念图不包含具体事例

C.概念图是按递进的形式表现的

D.概念图表达的是学习者个人对特定事物的理解