单项选择题

The purpose of Dr. Betas' study is to ______.

A．test the intelligence of the subjects
B．determine the psychological health of the subjects
C．improve brain-scanning technology
D．find out how the subjects deal with group/social pressure

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单项选择题

A．Sit there and study.B．Get snacks for everyone.C．Shuffle another deck.D．Play a card game.

A．Sit there and study.
B．Get snacks for everyone.
C．Shuffle another deck.
D．Play a card game.

单项选择题

A．He doesn’t like it.B．He doesn’t know how to play bridge.C．He has to study hard.D．He would like to be the dummy.

A．He doesn’t like it.
B．He doesn’t know how to play bridge.
C．He has to study hard.
D．He would like to be the dummy.