单项选择题

牙骨质结构不良分为三期病变

A．一期病变密度增高
B．三期病变密度不变
C．一期病变不均匀密度减低
D．三期病变不均匀密度减低
E．二期病变密度减低

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单项选择题

诊断急性白血病的最主要依据是（）

A.白细胞总数升高
B.胸骨压痛
C.发热
D.骨髓中原始细胞增多
E.出血

单项选择题

1. The picture 1
2. The picture 2
2. Which one is different interpretation among the below sentences about the two images?
A、According to 'the Dim-Bright Emotion Ratio', the picture1 is of 'Yin Energy' while the picture2 is of 'Yang Energy'.
B、The picture1 aims for certainty rather than the picture2.
C、The picture2 is being lively, so it's clear.
D、The picture1 is faint so it's ambiguous.