We can do a lot to stay healthy., we should eat a balanced diet.A. At a time B. In fact C.

发布时间：2020-08-16 22:25:17

We can do a lot to stay healthy.    , we should eat a balanced diet.
A. At a time           B. In fact          C. First of all

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解析：介词辨析。A每次；B事实上；D首先；结合句意可知C正确。句意：为了保持健康，我们能做很多事情，首先，我们应该有平衡的饮食。
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