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  3. [originaltext] Exercise is beneficial to your heart. A 22-year study was con

[originaltext] Exercise is beneficial to your heart. A 22-year study was con

游客2023-08-02  65
问题  
Exercise is beneficial to your heart. A 22-year study was conducted by doctors in California. They found that people who work at physical jobs experience fewer heart attacks than other people. The active people work all the time at moderated speeds. Their daily routine gives them an adequate amount of exercise and helps them stay in shape. However, machines that can do heavy labor more speedily are replacing this type of work.
选项 A、It is found that people who work at mental jobs experience fewer heart attacks than other people.
B、It is found that people who work at physical jobs experience fewer heart attacks than other people.
C、It is found that people who work at heavy jobs experience fewer heart attacks than other people.
D、It is found that people who work at easy jobs experience fewer heart attacks than other people.
答案 B
解析 Which of the following statements is true?
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