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
What do we learn about the Great Chicago Fire from the conversation
A．It was in 1893 when Chicago was still a small town.
B．It broke out when Chicago wasn’t even forty years old.
C．It didn’t ’affect Chicago significantly.
D．It was in 1871 when Chicago was fourteen years old.
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