单项选择题


Questions 16 to 20 are based on the following talk.

A． Because patients may not be able to afford the $ 300 price tag.
B． Because it cannot stop the grinding or clenching.
C． Because it cannot protect the teeth.
D． Because it will damage the arrangement of the teeth.
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单项选择题
A． 4B． 5C． 15D． 30
A． 4
B． 5
C． 15
D． 30
单项选择题
Why were GIs much more friendly towards their officers in combats according to Stouffer
A． Because they were afraid their officers might order them to assume dangerous tasks.
B． Because they could release their pent up frustration against the enemy.
C． Because they were more like equals and friends in face of enemy.
D． Because they are taught to be obedient by their parents.
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