阅读下面材料，回答下列的问题：U.S.BlacksHard-hitbyCancerDeathratesforcancerarefallingforal

共享题干题阅读下面材料，回答下列的问题： U. S. Blacks Hard-hit by Cancer Death rates for cancer are falling for all Americans, but black Americans are stillmore likely to die of cancer than whites, the American Cancer Society saidMonday. In a special report on cancer and black, the organization said blacks are usually diagnosed with cancer later than whites, and they are more likely to die of thedisease. This could be because of unequal (不平等的) access tomedical care, because blacks are more likely to have other diseases as well,and perhaps because, of differences in the biology (生手学)of the cancer itself, the report addeD、 "In general, black Americans have less hope of surviving five years after diagnosisthan whites for all cancer sites and all stages of diagnosis," the report said. "In describing cancer statistics for black Americans, this report recognizes thatmany of the differences associated with race may be caused by unfair social andeconomic differences and unequal access to medical care. " The cancer society said blacks should be encouraged to get check-ups (体格检查) earlier, when cancer is more treatable, and it said more researchis needed to see if biological differences play a role. "The new statistics emphasize the continuing importance of wiping out these unfairsocial differences 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 sexesfor all sites combined have dropped greatly among black Americans since 1992,as have incidence rates (发生率), " said the report. 1.[不定向选择题]Since1992, cancer death rates among black AmericanA.havebeen going up and down B.haveremained stable C.haveincreased D.havefallen 2.[不定向选择题]Whichmay NOT be a reason for higher cancer death rates among US blacks?A.Unequal access to medical car B.Greater probability of having other disease C.Differences in the biology of the cance D.Earlydiagnosi.?

1.参考答案：D
参考解析：题干：自1992年以来，美国黑人的癌症死亡率__________。?A、上下起伏? B、保持稳定??? CC、增加了??? D、减少了?细节题。利用题干关键词1992和cancer death rate可以定位到文章的最后一段“Cancer deathrates in both sexes for all sites combined have dropped greatly among blackAmericans since 1992”，即“自1992年以来，美国黑人的癌症死亡率下降了”。由此可知，答案为D。
2.参考答案：D
参考解析：题干：下列哪项不是美国黑人高癌症死亡率的原因?A、医疗机会的不均等??? B、患其他病的较高概率?C、癌症生物学方面的差异??? D、早期的诊断细节题。通过定位选项关键词，可以定位到文章第三段“This could be because of unequal(不平等的)accessto medical care，because blacks are more likely to haveother diseases as well，and perhaps because ofdifferencein the biology(生物学)of the canceritself”，即“这可能是因为医疗机会 的不均等，或者因为黑人更容易得其他病，或因为癌症在生物学上的差 异”。由此可知，A、B、C在文中都提到了，所以答案为D。?3.[不定向选择题]Cancer is more treatable if it is detectedA.in anearly stage B.in alate stage C.all ofa sudden D.together with other diseases?

我明天再问问老师，叫他解释下这个问题