Question

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

Answer 1

C

解析:

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。