单项选择题


Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．Many students try to study the whole night before an exam.
B．Sleep may improve memory.
C．Exams may harm memory.
D．Sleep can improve listening ability.
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单项选择题
A．He hiked along the Colorado River.B．He explored the Colorado River.C．He camped along the Colorado River.D．He visited the Colorado city.
A．He hiked along the Colorado River.
B．He explored the Colorado River.
C．He camped along the Colorado River.
D．He visited the Colorado city.
单项选择题
A．At school.B．At home.C．At Youth Clubs.D．At Youth Centers.
A．At school.
B．At home.
C．At Youth Clubs.
D．At Youth Centers.
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