买5本笔记本和6枝圆珠笔共用去15元，买同样的笔记本4本和圆珠笔3

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问题解答题

买5本笔记本和6枝圆珠笔共用去15元，买同样的笔记本4本和圆珠笔3枝共用去9.3元，每本笔记本和每枝圆珠笔各多少元？

答案

答：每本笔记本1.2元；每枝圆珠笔1.5元

选择题

It’s clear that people with ________ opinions may do things ________.

A．different; differently

B．difference; different

C．different; difference

D．differently; different

判断题

当吸收质在液相中的溶解度很小时，气相阻力是构成吸收的主要矛盾。