单项选择题

The experiment on the dental patients holding a rubber ball was to see _____.

A．if the ball would help them overcome their stress
B．if the ball would interfere with the dentist's activities
C．if the ball would help the dentist's treatment on them
D．on which side they held it.
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单项选择题
We can learn from the passage that the two talk shows _____.
A．have monopolized the talk show circuit
B．exploit the weaknesses in human nature
C．appear at different times of the day
D．are targeted at different audiences
单项选择题
The apparently contradictory phenomenon is that _____.
A．mothers of premature babies took their babies to a follow-up clinic
B．all mothers of premature babies were seen to hold their children differently from other mothers
C．The behaviour of mothers of premature babies rejected Lee Salk's theory
D．mothers of premature babies held their babies 9n the correct side
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