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举一反三
【单选题】替牙期暂时性错是（）
A.
多生牙导致上颌左右中切牙萌出早期出现间隙
B.
上 . 下恒切牙萌出早期可出现前牙反
C.
上侧切牙萌出早期，牙冠近中倾斜
D.
恒切牙萌出初期出现轻度拥挤
E.
以上都是
【单选题】No one knows exactly how many disabled (残废的) people there are in the world, but estimates suggest the figure is over 450 million．The number of disabled people in India alone is probably more than doub...
A.
it is possible to get an exact figure of the world's disabled people
B.
there are many disabled people in the world
C.
the number of disabled people in India is the greatest
D.
India has not much more disabled people than Canada
【单选题】下列属于替牙期暂时性错的是（）
A.
多生牙导致上颌左右中切牙萌出早期出现间隙
B.
上、下恒切牙萌出早期可出现前牙反
C.
上侧切牙萌出早期，牙冠近中倾斜
D.
恒切牙萌出初期出现轻度拥挤
E.
以上都是
【单选题】No one knows exactly how many disabled (残废的) people there are in the world, but estimates suggest the figure is over 450 million. The number of disabled people in India alone is probably more than dou...
A.
The meaning of "barrier" is ______.
B.
A) disadvantage C) disability
C.
B) difficulty D) obstacle