听力题

单选题 If after vigorous exercise a person''s pulse rate remains high for a long while, he or she________.

A、 has an unusually strong heart
B、 must be suffering from some disease
C、 should go to the hospital to have a check-up
D、 needs to reduce the intensity of the exercise

【正确答案】 D

【答案解析】

单选题 One way in which exercise can improve our health is that it helps us to________.

A、 lose weight
B、 sweat
C、 build muscles
D、 gain confidence

【正确答案】 A

【答案解析】

单选题 Dieting is not an effective way to lose weight unless________.

A、 it is accompanied by exercising
B、 you drink nothing but milk
C、 you avoid eating fatty meat
D、 you take more vitamins when exercising

【正确答案】 A

【答案解析】

单选题 The problem with most Americans'' diet is that they________.

A、 drink too much milk
B、 drink too much alcohol
C、 consume too much meat and sugar
D、 don''t get enough thiamine

【正确答案】 C

【答案解析】

单选题 According to Dr. Mirkin, drugs such as amphetamines cannot increase an athlete''s performance,

A、 because they actually do harm to his or her health
B、 because they only stimulate his or her imagination
C、 because they increase his or her strength only temporarily
D、 because they actually slow down his or her reactions

【正确答案】 B

【答案解析】