单项选择题

A．They haven’’t devoted as much energy to medicine as to space travel.
B．There are too many kinds of cold viruses for them to identify.
C．It is not economical to find a cure for each type of cold.
D．They believe people can recover without treatment.
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单项选择题
A．The music passed down from older generations.B．Recorded music instead of live music.C．Modern music young people can enjoy.D．The music children hear in a car.
A．The music passed down from older generations.
B．Recorded music instead of live music.
C．Modern music young people can enjoy.
D．The music children hear in a car.
单项选择题
A．Marie has fulfilled herself in life and work after continuing education.B．Marie has guts to take the continuing education and succeeded.C．By taking continuing education, Marie became the Chief Nurse.D．Continuing education makes Marie make good use of her full potential.
A．Marie has fulfilled herself in life and work after continuing education.
B．Marie has guts to take the continuing education and succeeded.
C．By taking continuing education, Marie became the Chief Nurse.
D．Continuing education makes Marie make good use of her full potential.
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