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问题 单项选择题 A1/A2型题

关于间羟胺的描述错误的是（）

A.选择性激动α受体

B.升压作用较去甲肾上腺素弱而持久

C.比NA较少引起心律失常

D.能产生快速耐受性

E.可以替代NA用于各种休克早期

答案

参考答案：A

选择题

It is        to read the books our teacher recommended , for they are well _____ reading.

A．worthy ; worthwhile

B．worth ; worthwhile

C．worthwhile ; worthy

D．worthwhile ; worth
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选择题

Paper making began in China and from there it _____ to North Africa and Europe.

A．sprang

B．spilled

C．carried

D．spread
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