Because she has changed the appointment twice before．,B-找考题网

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A．Because she has changed the appointment twice before.
B．Because she is free only at that period of time.
C．Because she has got a toothache all day.
D．Because her dentist will be busy at other periods.

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单项选择题

A．you do physical exercises late in the day.B．you have sleeping pills.C．your heart rate increases.D．you rest frequently during the day.

A．you do physical exercises late in the day.
B．you have sleeping pills.
C．your heart rate increases.
D．you rest frequently during the day.

单项选择题

What can be inferred from the last paragraph

A．Developed countries will employ more qualified professionals from the countries of the South.
B．If no effective methods are adopted by the countries of the South, brain drain will not stop.
C．The educational systems in the developed countries are not very efficient.
D．It is of no use that the developing countries encourage their trained professionals to return.

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