Question

4. You can't change your genes but there are things you can do now to        your risk for heart disease later.

   A. abolish   B. swell   C. decrease   D. limit

Answer 1

4. C句意为："现在,你不能改变自己的基因，但还有些事情是你能做到的，而那可以减少你未来患心脏病的风险。"decrease相当于reduce 艮减少，符合题意。