2004年职称英语考试理工类B级试题及答案(13)

race may be caused by unfair social and economic 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 research is needed to see if biological differences play a role．

“The new statistics emphasize the continuing importance of wiping out these unfair social differences through public policy and education efforts，”the organization said in a statement．

But it also noted a出op 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(发生率),”said the report．

31．Black Americans arc more likely to die