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【单选题】
以下关于前牙3/4冠切沟的描述中错误的是A.
位于切斜面内
B.
连接两邻沟
C.
可增加3/4冠强度
D.
最主要的抵抗舌侧脱位的结构
E.
可用倒锥钻预备
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皮皮学刷刷变学霸
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【单选题】下列千斤顶按其构造工作原理分类中，( )具有起重量大、操作省力、上升平稳、安全可靠等优点，但其上升速度比较慢。
A.
齿条式千斤顶
B.
液压千斤顶
C.
螺旋式千斤顶
D.
直压式千斤顶
【简答题】Information Matching In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph ...
【单选题】听力原文：Interviewer: Hello, Nancy. I know you are one of the few women taxi drivers in the city now and you drive for a living. What made you want to become a taxi driver in the first place? Nancy: (1 [D...
A.
she owned a car
B.
she drove well
C.
she liked drivers' uniforms
D.
it was her dream
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