Directions: There are ten incomplete sentences in this part. For each sentence there are four choices marked A), B), C) and D). Choose the one that best completes the sentence and mark the corresponding letter on the answer sheet.
Doctors believe that secondhand smoke may cause lung cancer in people who do not smoke. Nonsmokers often breathe in the smoke from other people's cigarette. This is secondhand smoke. The U.S. Environmental Protection Agency reports that about fifty-three thousand people die in America each year as a result of exposure to secondhand smoke.
The smoke that comes from a lit cigarette contains many different poisonous chemicals. In the past, scientists did not think that these chemicals harm a nonsmoker's health. Recently, though, scientists expressed their opinion after they studied a large group of nonsmokers. They discovered that even nonsmokers had unhealthy amounts of these toxic chemicals in their bodies. As a matter of fact, almost all of us breathe tobacco smoke at times, whether we realize it or not. For example, we cannot avoid secondhand smoke in restaurants, hotels, and other public places. Even though many public places have nonsmoking areas, smoke flows in from the areas where smoking is permitted.
It is even harder for children to avoid secondhand smoke. In America, nine million children under the age of five live in homes with at least one smoker. Research shows that these children are sick more often than the children who live in homes where no one smokes. The damaging effects of secondhand smoke on children also continue as they grow up. The children of smokers are more than twice as likely to develop lung cancer when they are adults as the children of nonsmokers. The risk is even higher for the children who live in homes where both parents smoke.
Questions:
31. It can be inferred that about fifty-three thousand people die in America ____.
A. because of smoking
B. though they don't smoke
C. because their parents smoke
D. though their parents don't smoke
32. Non-smokers get harmed by smokers ____.
A. because of the poisonous smoke they breathe in
B. if they live together
C. when there is no non-smoking area in the public places
D. though the poisonous chemicals contained in the smoke don't harm them
33. Which of the following statements is not true?
A. Non-smokers may be passively involved in secondhand smoking.
B. Some non-smokers may die of lung cancer because of secondhand smoking.
C. We all, more or less, suffer from secondhand smoking.
D. Secondhand smoking is even more harmful than smoking itself.
34. Which of the following is not listed as a negative effect caused by secondhand smoking on children?
A. They are more likely to be sick.
B. They are more likely to develop mental disease.
C. They tend to have the bad effect continue when growing up.
D. They are more likely to develop lung cancer.
35. Which group of children suffer from secondhand smoking the most seriously?
A. Children under the age of five living in homes with no smokers.
B. Children under the age of five living in homes with one parent smoking.
C. Children under the age of five living in homes with both parents smoking.
D. Children under the age of five living away from their parents.
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