搜题请搜索小程序“爱下问搜题”
问题 选择题
下列现象，属于扩散现象的是（   ）

A．春天沙尘暴，飞沙满天

B．擦黑板时，粉笔灰四处飞扬

C．槐树开花时，空气中弥漫着槐花的香味

D．煮稀饭时，看见米粒在水中翻滚

答案

答案：C

单项选择题

仙方活命饮与普济消毒饮两方均含有的药物是

A．贝母

B．连翘

C．金银花

D．陈皮

E．乳香
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选择题

A: Do you know _______ for advice when we have problems.

B: You can talk to your parents or teachers. [ ]

A. who to talk

B. when to talk to

C. who to talk to

D. who can we talk to
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