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单项选择题

A．That Bob does not get along with his lab. partner.
B．That the students performed the experiment correctly.
C．That the students had problems, and could not complete the lab experiment.
D．That there was a fire in the lab during the experiment.
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单项选择题A．He doesn’t know what he wants to do.B．He’d like to work this winter.C．He wonders whether the woman has a job.D．He can’t decide where to go on vacation.

A．He doesn’t know what he wants to do.
B．He’d like to work this winter.
C．He wonders whether the woman has a job.
D．He can’t decide where to go on vacation.

单项选择题A．A new dependence on people far away and money.B．The introduction of a new alphabet and numerical system.C．Necessity of farming and hunting.D．Large family units and money problems.

A．A new dependence on people far away and money.
B．The introduction of a new alphabet and numerical system.
C．Necessity of farming and hunting.
D．Large family units and money problems.