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问题 单项选择题

男，1岁半。4个上切牙唇面龋坏深，上颌第一乳磨牙颊面和面龋浅，患儿有夜里喝奶习惯。应考虑为（）。

A．猖獗龋

B．奶瓶龋

C．多发龋

D．婴幼儿龋

E．忽视性龋

答案

参考答案：B

完形填空

课文内容填空：

By chance I_____小题1:______ an article about a doctor called Lin Qiaozhi, a specialist in women’s diseases. She lived from 1901 to 1983. ______小题2:____ she had been very busy in her chosen career, traveling abroad to study __小题3:______ writing books and articles. One of them ___小题4:____.... I looked carefully at the text and realized that it ____小题5:_______women in the countryside. Perhaps if they had an emergency they could not________小题6:___.
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单项选择题

粗粒化材料的粒径一般最小为（）为宜。

A.3mm

B.5mm

C.10mm

D.15mm
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