单项选择题

What does Dr．Richard Perelman do

A．He conducts large-scale tests.
B．He writes books about children.
C．He teaches at the university.
D．He recommends babysitters.
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单项选择题
What do people do before“Cyber Monday”
A．Check out the latest price reduction online.
B．Look round for items in the physical stores.
C．Order the products from the online stores.
D．Wait in queue outside the stores overnight.
单项选择题
A．Write an outline.B．Have a rehearsal.C．Meet his supervisor.D．Work at his office.
A．Write an outline.
B．Have a rehearsal.
C．Meet his supervisor.
D．Work at his office.
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