单项选择题

A．Children’s IQ and TV.
B．The time children spend watching TV.
C．The effect TV has on learning.
D．The amount of time the average child spends watching TV.
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单项选择题
A．The professor is old.B．The professor is lazy.C．The professor is sick.D．The professor is only tired.
A．The professor is old.
B．The professor is lazy.
C．The professor is sick.
D．The professor is only tired.
单项选择题
A．Check to see if anyone lazes out.B．Do the group members’ work.C．Check to see if it’s done correctly.D．Check to see if everyone is there.
A．Check to see if anyone lazes out.
B．Do the group members’ work.
C．Check to see if it’s done correctly.
D．Check to see if everyone is there.
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