___ a teacher, he is strict with his stu_爱下问搜题

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问题选择题

___ a teacher, he is strict with his students.

A．Like

B．As

C．Be

D．About

答案

答案：B

填空题

去括号7x³-[3x²-（x+1）]=______．

单项选择题

下列药物中哪个含有儿茶酚结构

A．酚妥拉明

B．盐酸甲氧明

C．盐酸麻黄碱

D．异丙肾上腺素

E．盐酸克仑特罗