Exercise is good for you,but most people really know very little about how to exercise properly.51 when you try,you can run into trouble.51.A.While B.When C.As D.So
问题描述：
Exercise is good for you,but most people really know very little about how to exercise properly.51 when you try,you can run into trouble.
51.A.While B.When C.As D.So
答
锻炼对你有益，但很少有人知道如何正确的锻炼。如果你胡乱尝试，你有可能遇到麻烦。
答
D
答
锻炼有益于你,但是大多数人真的不太知道如何正确锻炼身体.