职称英语理工类考试考前每日一练(24)_职称英语备考指南

　　But it also noted a drop in cancer death rates.

　　Cancer death rates in both sexes for all sites combined have dropped greatly

　　among black Americans since 1992, as have incidence rates , said the report.

　　31. Black Americans are more likely to die of cancer than

　　A. people in other countries.

　　B. white Americans.

　　C. all other Americans.

　　D. their ancestors.

　　32. Which may NOT be a reason for higher cancer death rates among US blacks?

　　A. Unequal access to medical care.

　　B. Greater probability of having other diseases.

　　C. Differences in the biology of the cancer.

　　D. Early diagnosis.

　　33. Cancer is more treatable if it is detected

　　A. in an early stage.

　　B. in a late stage.

　　C. all of a sudden.

　　D. together with other diseases.

　　34. Public policy and education efforts may help to do away with

　　A. death rates.

　　B. various cancers.

　　C. unfair social differences.

　　D. biological differences.

　　35. Since 1992, cancer death rates among black Americans

　　A. have been going up and down.

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