单项选择题


Questions 22 to 25 are based on the conversation you have just heard.

A．Two years.
B．Five years.
C．Three years.
D．Eight years.
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单项选择题
A．A driving test.B．A Police Movie.C．The best way to signal.D．A traffic accident:
A．A driving test.
B．A Police Movie.
C．The best way to signal.
D．A traffic accident:
问答题
废弃的电子产品越来越多；2. 如何正确处理这些电子产品。
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