单项选择题


A．the number of
B．the amount of
C．a number of
D．an amount of
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单项选择题
A．requirementsB．qualificationsC．acquirementsD．inquiries
A．requirements
B．qualifications
C．acquirements
D．inquiries
单项选择题
The passage mainly deals with the topic of ______.
A．protection of environment
B．relationship between neighbors
C．generation gap
D．cause of jealousy
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