下列常用的光学元件中，能对光线起会聚作用的是

题干

A：平面镜

B：凸面镜

C：凸透镜

D：凹透镜

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C

Situations	Differences
Situations	Britons (英国人)	Americans
When being knocked into	They will say “sorry” before the other does.	They will ____ the person and expect him to say “sorry”.
When going out for dinner	They will ____ when going out for dinner.	They may wear a normal shirt to go to a good____.
When taking a taxi	They will give an address to the taxi driver and then ____.	They will ____ the taxi driver all the time.