The people from most parts of the world say that "America is a country with the very best and the very worst." This article is about the very worst.

●Too many jails(监狱)

Americans have more people in jail than any country in the world. Nobody understands why America needs to have so many people in jail, and why so Americans break the laws.

●American Fast food

Before, a Coke and a burger were a symbol of success, youth and great living around the world. Now, American fast food is a symbol of obesity(肥胖), illness and early death. While American fast food is killing people around the world. Luckily, people are starting to wake up in America and also in other countries around the world.

●Earth pollution 

The Americans and American companies have poured lot of rubbish and dirty water into the river and made plenty of fish die. They say people must protect our earth everywhere in the world, but many Americans don't care.

●Guns

Almost each person in America has a gun .Many think it's not right.About 30,000-40,000 die or are injured by them every year. 

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1.This passage is mainly talking about______.

A American 4 worst things

B American fast food

C American pollution

D American jails

解析：选A。主旨大意题。根据文章第一段第二句This article is about the very worst. 可知，故选A。

2.How many tips does the passage mention?

A 1

B 2

C 3

D 4

解析：选D。细节理解题。根据文章三个四点可知,故选D。

3.American fast food makes the people_____ according to the passage.

A healthy

B fat

C strong

D thin

解析：选B。根据文章第三段第二句Now, American fast food is a symbol of obesity, illness and early death.可知，快餐会令人肥胖，疾病与死亡，故选B。

4.Which is NOT true according to the passage?

A American has the most jails in the world.

B Americans made a lot of fish die in the past years.

C About 30,000-40,000 people died or injured because of the guns.

D People can’t have guns now in America .

解析：选D。推理判断题。文章中并未提及美国现在禁止枪支，D选项错误。

5.Where can you read the passage?

A In a fashion magazine.

B In a story book.

C In a food website.

D In a blog.

解析：选C。C文章出处题。 根据文章可知，作者给出了美国是最差国家的他的四个观点，故选C。