单项选择题


Passage Two
Questions 29 to 31 are based on the passage you have just heard.

A．The effects of noise on the quality of life.
B．The role of air traffic restrictions.
C．The production of quieter engines.
D．The economic aspects of noise reduction.
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单项选择题
A．The texts are the revealing of the texters’ characters.B．The texts are well written by the texters.C．The texts are unacceptable by others except the texter.D．The texts are shocking to others and the texter himself.
A．The texts are the revealing of the texters’ characters.
B．The texts are well written by the texters.
C．The texts are unacceptable by others except the texter.
D．The texts are shocking to others and the texter himself.
单项选择题
Which of the following is mentioned by the author as one of our most valuable assets
A．Perseverance.
B．Our potential.
C．24 hours each day.
D．Our attitude to life.
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