In______review of 44 studies, American researchers found that men and women who ate six key foods daily cut the risk of______hea

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问题 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%.

选项 A、a; the
B、the; a
C、a; /
D、/; a

答案C

解析 review是可数名词,表示泛指要用不定冠词a。heart disease表示泛指不用冠词。
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