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

【答案】

 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。