It is also an good idea to talk with your doctor 56 before start exercising. Let’s start to exercise by now. 57 试卷第1页,共3页 试卷第1页,共3页 参考答案: 1.B 2.A 3.B 4.B 5.C 6.A 7.C 8.B 9.C 10.A 11.D 12.E 13.A 14.C 15.C 16.A 17.B 18.B 19.C 20.B...