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问题 单项选择题 B1型题

上述混合物的酸水液用氯仿萃取，氯仿层用2%氢氧化钠萃取，可提出（）

A.葡萄糖

B.季铵碱

C.酚性弱碱性生物碱

D.叔胺碱

E.非酚性弱碱性生物碱

答案

参考答案：C

阅读理解

小题1:Whose attitude(态度)  towards homework is positive(积极的) ?

A．William and Mary.

B．Chris and Sarah.

C．William and Sarah.

D．Mary and Chris.小题2: According to Mary's post, we know _______.

A．she likes homework a lot.

B．she thinks checking homework is worthless.

C．she hates students who don't do homework.

D．she hopes people can understand her hard work.小题3:Sarah is a_______.

A．parent

B．writer

C．student

D．teacher
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填空题

认为：“疫毒直干肺脏，而咽烂气秽，盛者直陷心包，而神昏不救”者是（）
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