单选题
The doctor advised me to increase my intake of healthy foods that can ______ heart disease.
A. give off
B. pay off
C. set off
D. ward off
A
B
C
D
【正确答案】
D
【答案解析】
[解析] give o任：释放出；pay off：有回报，还债，报复；set off：开始，使某人开始做……，增强，使……爆炸；ward off：躲避，防止
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