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                                                       Obama still smokes in secret
     US President Barack Obama may have just made life more difficult for cigarette makers, but he still
smokes every now and then in secret.
     Obama, who has publicly struggled to quit smoking, said he still hasn't completely kicked the habit
even after signing a law this week that will likely set tough new rules for the tobacco industry.
      "As a former smoker I constantly struggle with it. Have I fallen off the wagon sometimes? Yes. Am
I a daily smoker, a constant smoker? No," Obama said at a news conference.
     "I don't do it in front of my kids, I don't do it in front of my family. I would say that I am 95 percent
cured, but there are times where I mess up," he said.
     The new law gives the US Food and Drug Administration the power to strictly limit the making and
marketing of tobacco products.
      At a White House signing ceremony Monday, Obama said that he was among the nearly 90 percent
of smokers who took up the habit before their 18th birthday.
      "Once you go down this path it's something you continually struggle with, which is exactly why the
law we signed is so important because what we don't want is kids going down that path in the first place,"
he said at the news conference.
     Nearly 20 percent of Americans smoke and tobacco use kills about 440,000 people a year in the United
States due to cancer, heart disease, and other serious diseases.
1. According to the passage, Obama _______.
A. was cured of a disease
B. had an accident
C. made Americans' life difficult
D. signed a law this week
2. What does the underlined sentence mean in the third paragraph?
A. Have I dropped from the wagon?
B. Have I stopped smoking completely?
C. Do I still smoke sometimes?
D. Do I still smoke as much as before?
3. Which of the follow is NOT TRUE?
A. Nearly 90 percent of the population of America smoke.
B. Nearly 90 percent of the smokers of America began to smoke before they turned 18.
C. Nearly 1/5 of Americans smoke.
D. Smoking kills about 440,000 people a year in the USA.
4. The new law first looks at _______ health.
A. adults'
B. middle-aged people's
C. women's
D. children's
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科目：高中英語 來源：測試專家課課練單元練　　高二英語(下) 題型：050

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　　The idea of light pollution has developed with the increase of lights in cities. In many areas, this light makes it difficult or impossible to observe stars and planets in the night sky.

　　There are a number of reasons why light pollution is important. One has become clear at the Mount Wilson Observatory(天文臺) near Los Angeles, California. Today, light from Los Angeles makes the night sky above Mount Wilson very bright. It is no longer an important research center because of light pollution.

　　Light pollution threatens(威脅) to reduce the scientific value of research telescopes in other important ob servatories. They include Lick Observatory near San Jose, California and Yerkes Observatory near Chicago, Illinois.

　　Light pollution is the result of wasted energy. Bright light that shines into the sky is not being used to provide light where it is needed on Earth. Poorly designed lighting causes a great deal of light pollution. Lights that are brighter than necessary also cause light pollution.

　　Recently, two Italian astronomers(天文學家) and an American environmental scientist created a world map of the night sky. The map shows that North America, Western Europe and Japan have the greatest amount of light pollution.

　　Most people in America are surprised to find out that they are able to see our own galaxy(星系), the Milky Way(銀河系), with their own eyes. But about three-fourth of Americans cannot see the Millky Way because of man-made light.

　　Objects in the night sky are resources that provide everyone with wonder. But light pollution threatens to prevent those wonderful sights from being seen.

1．Light pollution usually occurs ________.

[　　]

A．in cities

B．in the country

C．in wild areas

D．in developing countries

2．People can not see the stars in the sky because of ________.

[　　]

A．a(chǎn)ir pollution
B．water pollution
C．light pollution
D．gas pollution

3．The victim(受害者) affected by the light pollution is ________.

[　　]

A．children
B．grown-ups
C．students
D．observatories

4．There is less light pollution in ________.

[　　]

A．the United States
B．Canada
C．France
D．Egypt

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