新编六级听力练习 第364期

Passage Two
29.
A. It's a low impact activity and no one wants to do it.
B. It helps us practise the same large muscle group rhythmically.
C. It's a dangerous and unendurable exercise.
D. It's not good to the heart.
30.
A. We can breathe as easily as usual.
B. We can carry on a short conversation.
C. The aerobic curve occurs at the end of the exercises.
D. The aerobic curve occurs in the middle of the exercises.
31.
A. To maintain a high heart rate for the longest duration.
B. To reach and maintain your target heart rate for the entire exercise.
C. To burn calories as efficiently as possible.
D. To maximize your heart rate and get rid of extra fat.
32.
A. Stop in the middle of the class.
B. Speed up the pace.
C. March in place for a while.
D. Concentrate on exercise.