题目内容

9个月男孩，反复抽搐4次，智力差，表情呆滞。皮肤白嫩，头发黄色，尿有霉臭味。为明确诊断，应选择的检查是

A. 脑电图
B. 腕部摄片
C. 染色体检查
D. 血T3、T4、TSH
E. 尿三氯化铁试验

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2岁男孩，生后4个月逐渐出现智力低下，毛发颜色变浅、皮肤白皙、抽搐三次来诊。本病可能的病因是

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A. plains, basins
B. basins, plains
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D. highlands, plains

_________ and opening-up are the two fundamental state policies of China. They have not only promoted the sustained, swift and sound development of China’s national economy, but also helped restructure its economic system.

A. Reform
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D. The Belt and Road Initiative

Taking a bird's-eye view of China, the terrian gradually descends from west to east like ______ steps of staircases.

A. three
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