20.promote vt.推广，宣传；促销；促进，推动

21.intelligence n.智力，才智；情报

intelligent adj.有才智的，聪明的

22.slave n.完全受......控制的人；奴隶

23.consult vt.咨询；请教

Ⅱ.短语自测

1.be related to与......相关

2.stand for代表；象征

3.be meant to旨在，目的是

4.protect...against/from sth.保护，防护......不受到......

5.be aware of意识到；明白

6.even if/though虽然，即使

7.fall for上......的当，受......的骗

8.play tricks on欺骗；捉弄

9.deal with涉及，关于；处理，应付

10.warn against提醒注意；警告

11.agree with sb.同意某人

Ⅰ.根据课文内容选择正确答案

1.How many main types of advertisements are there in our life generally?

A.One. B.Two. C.Three. D.Four.

答案　B

2.What is the purpose of PSAs?

A.To attract people's attention.

B.To promote commercial products.

C.To advertise various services.

D.To educate the public and help people lead better lives.

答案　D

3.What should we do when it comes to advertisements?

A.We should believe these advertisements totally.

B.We should never believe these advertisements.

C.We should use our intelligence and not be a slave to them.

D.We should believe that all ads are meant to benefit the public.