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【单选题】C Psychology is the study of the mind and mental activities. For example, psychologists are interested in why some things make you sad, but others make you happy. They want to know why s...
A.
the mind
B.
the sports ability
C.
the feelings
D.
the whole brain
【单选题】上颌前突、下颌后缩畸形的头影测量特点是（）
A.
∠SNA增大，∠SNB增大，∠ANB增大。
B.
∠SNA增大，∠SNB减小，∠ANB增大。
C.
∠SNA减小，∠SNB减小，∠ANB增大。
D.
∠SNA减小，∠SNB增大，∠ANB减小。