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%.

1. A.
   a; the
2. B.
   the; a
3. C.
   a; /
4. D.
   /; a

Answer 1

C
句意：在一份关于44项研究的报告中提到，美国科研人员发现每天吃六种主食的人可以使心脏病的发病率降低76%。review--a report on a subject or a series of events报告、汇报、详述，为可数名词；disease疾病，作可数名词、不可数名词皆可，但是当表示身体具体部位的疾病时，为不可数名词，如：liver/kidney disease肝/肾病。