单项选择题


In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question.

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单项选择题
50 Palestinians or so have been killed in the raids which began ______ ago.
A．12 weeks
B．12 days
C．2 weeks
D．2 days
单项选择题
According to this passage, all of the following factors could account for brain shrinkage EXCEPT ______.
A．age
B．education
C．health
D．exercise
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