单项选择题


Questions 1 to 8 are based on the conversation you have just heard.

A．She didn’t like the books the man bought.
B．There wasn’t a large selection at the bookstore.
C．The man bought a lot of books.
D．She wanted to see what the man bought.
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单项选择题
A．The woman doesn’t think it is exciting to travel by air.B．They’ll stay at home during the holidays.C．They are offered some plane tickets for their holidays.D．They’ll be flying somewhere for their vacation.
A．The woman doesn’t think it is exciting to travel by air.
B．They’ll stay at home during the holidays.
C．They are offered some plane tickets for their holidays.
D．They’ll be flying somewhere for their vacation.
单项选择题
A．Because it is extremely dangerous to conduct such research on an airplane.B．Because it remains a mystery what wavelengths are liable to be interfered with.C．Because scientists have not been able to produce the same effects in labs.D．Because experts lack adequate equipment to do such research.
A．Because it is extremely dangerous to conduct such research on an airplane.
B．Because it remains a mystery what wavelengths are liable to be interfered with.
C．Because scientists have not been able to produce the same effects in labs.
D．Because experts lack adequate equipment to do such research.
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