复合题

Directions: There are four passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A., B., C. and D. You should decide on the best choice and mark the corresponding letter on the Answer Sheet.

Passage Two

Deaths from cigarettes are likely to more than triple over the next quarter century to 20 every minute around the world, scientists warn in a new global survey. The survey covers 45 countries, 15 more than the previous study. The additional nations are from eastern Europe and the former Soviet Union.

Sixty million deaths have been caused by smoking since the 1950s, the investigators estimate. They predict smoking will kill about 10 million people a year by 2020, the vast majority in developing countries where the habit continues to attract young women.

Investigators were unable to acquire smoking statistics from every country, which would allow the most precise estimates. Instead, they compared data on lung-cancer death rates among American non-smokers to the lung-cancer death rate in each country to get an estimate of the number of smoking in a nation.

The researchers said they used lung-cancer rates as the yardstick（标尺） because in developed countries, lung cancer is closely related to smoking and so seldom caused by any other factor among non-smokers.

According to the report, 10 percent of middle-age British men will die from smoking by the time they are 35 to 69 years old. In Poland, 20 percent of men are doomed to die from smoking, the researchers predict.

单选题 It can be inferred from the passage that now the deaths from cigarettes every minute are most close to _____.

【正确答案】 B

【答案解析】根据第一段首句“Deaths from cigarettes are likely to more than triple over the next quarter century to 20every minute around the world, scientists warn in a new global survey”可知，此句是说在接下来的25年里，吸烟致死的人数可能会翻三倍达到每分钟20人，运算可知，现今吸烟致死的人数更接近每分钟7人，因此本题答案为B。

单选题 According to the passage, in the previous report countries from _____ are not included.

单选题 One reason that more deaths from cigarettes are from developing countries is _____.

单选题 Why lung-cancer is used in the research?

【正确答案】 A

【答案解析】结合倒数第二段中“The researchers said they used lung-cancer rates as the yardstick because in developed countries, lung cancer is closely related to smoking and so seldom caused by any other factor among non-smokers”可知研究人员拿肺癌作为衡量尺度的原因是在发达国家，吸烟是导致肺癌最直接的原因。可知A为正确选项。