单选题
下面有3篇短文,每篇短文后有5道题,每道题后面有4个选项。请仔细阅读短文并根据短文内容回答其后面的问题,从4个选项中选择1个最佳答案。
{{B}}第一篇{{/B}}
{{B}} US Blacks Hard-hit by Cancer{{/B}}
Death rates from cancer are falling for all Americans, but black Americans are still more likely to die of cancer than whites, the American Cancer Society said Monday.
In a special report on cancer and blacks, the organization said blacks are usually diagnosed with cancer later than whites, and they are more likely to die of the disease.
This could be because of unequal access to medical care, because blacks are more likely to have other diseases like diabetes as well, and perhaps because of differences in the biology of the cancer itself, the report added.
"In general, African Americans have less likelihood of surviving five years after diagnosis than whites for all cancer sites and all stages of diagnosis," the report said.
"In describing cancer statistics for African Americans, this report recognizes that socioeconomic disparities and unequal access to medical care may underlie many of the differences associated with race."
The cancer society said blacks should be encouraged to get check-ups earlier, when cancer is more treatable, and it said more research was needed to see if biological differences play a role.
"The new statistics emphasize the continuing importance of eliminating these social disparities through public policy and education efforts," the organization said in a statement.
But it also noted a drop in cancer death rates.
"Cancer death rates in both sexes for all sites combined have declined substantially among African Americans since 1992, as have incidence rates," says the report.
"Increased efforts to improve economic conditions in combination with education about the relationship of lifestyle choices to cancer could further reduce the burden of cancer among African Americans."
About 36 million Americans describe themselves as black, representing about 12 percent of the population.
单选题 Black Americans are more likely to die of cancer than______.
【正确答案】 B
【答案解析】[解析] 注意被选中A和B都涉及到了白人,利用“黑人”和“白人”分别作为答案线索词,这样在文章第一段找到相关句:据美国癌症学会报道,……但是黑人与白人相比,黑人死于癌症的可能性仍然要人。所以答案为B。
单选题 All the following are probably related to the higher cancer death rates among black Americans EXCEPT______.
【正确答案】 D
【答案解析】[解析] 文章第3段、第5段、第10段先后提到医疗保健条件、经济条件、生活方式等因素,并指出这些因素有可能与美国黑人较高的痛症死亡串有关,最后一段虽然提到了人口百分比,但这与死亡率无关。
单选题 Cancer is more treatable if it is detected______.
【正确答案】 A
【答案解析】[解析] 利用题干中的检测“检测”作为答案线索,发现文章第6段提到,应该鼓励黑人早点检查(check-ups)身体,因为早期发现有助于癌症的治疗。
单选题 More research is needed to see if there is link between biological differences and______.
【正确答案】 C
【答案解析】[解析] 利用题干中“生物学方面的差异”作为答案线索,这样在文章第3段和第6段发现“人们想知道的是生物学方面的差异是否与癌症的死亡率有关联”。
单选题 Since 1992, cancer incidence rates among black Americans______.
【正确答案】 D
【答案解析】[解析] 利用题干中的时间词作为答案线索,发现文章第9段指出,美国黑人的癌症发生率和死亡率都下降了。