Why should you know when to stop（）
A. Because you need rest.
Because audience may fall asleep.
C. Because you may be tired for talking too long.
D. Because it can make audience remember what you said.
查看答案
Stress can affect the respiratory system by（）
A. decreasing the pulse rate
B. a loss of carbon dioxide
C. causing breathing problems
D. causing asthma
All of the money that the students make goes to helping a local ______ project（）
A. youth
B. store
C. adult
D. sports
59（）
A. everything is wrong
B. Do you agree
C. let’s total the score
D. let’s do it
E. we can do it
F. Here is the answer sheet
G. Here is your score
H. the percentage is incorrect
25（）
A. hopeful
B. beneficial
C. complicated
D. impossible
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