单选题
It can be learnt from the passage that the health benefits of exercise ______.
A、
are yet to be proved
B、
are to be further studied
C、
are supported by scientific evidence
D、
are self-evident
【正确答案】
C
【答案解析】
[解析] “As the popularity of exercise continue to mount，so does scientific evidence of its health benefits．”表明锻炼的好处是有科学依据的。
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