问题 选择题

In         review of 44 studies, American researchers found that men and women     who        

ate six key foods daily cut the risk of ______ heart disease by 76%.

A.a; the

B.the; a

C.a; 不填

D.不填; a

答案

答案:C

一份44个研究课题组成的调查显示,故第一空选冠词a;第二空 heart disease(心脏病)习惯上不用惯词。

单项选择题
填空题