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问题 单项选择题

导柱的加工方案可选择为（）。

A、备料→粗加工→半精加工→精加工→光整加工→热处理

B、备料→粗加工→半精加工→精加工→热处理→光整加工

C、备料→粗加工→热处理→半精加工→精加工→光整加工

D、备料→粗加工→半精加工→热处理→精加工→光整加工

答案

参考答案：D

阅读理解

This is Liu Fei’s room. It’s a small but nice room. On the wall, there are two maps. One is a map of China, the other is of the world. There’s a desk in front of the window and on the desk there is a clock. Near the clock there is a glass. There’s some water in it. And there are two pencils, one pen and some books on the desk too. There is a chair on the floor and under the chair there’s a ball. Liu Fei often studies (学习) in his room and he likes his room very much..

小题1:Liu Fei’s room is __________.

A．big and nice

B．small but nice

C．big but bad

D．small and bad小题2:There is some __________ in the glass.

A．milk

B．water

C．tea

D．orange小题3:There are some books __________ .

A．on the chair

B．on the desk

C．on the floor

D．on the wall小题4:What can you see on the wall of the room?

A．Two maps.

B．A clock.

C．A chair

D．A window小题5:Where is the pen?

A．On the floor.

B．In the desk.

C．Under the chair.

D．On the desk.
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单项选择题

最美观的修复体是

A．嵌体
B．甲冠
C．3/4冠
D．金属全冠
E．烤瓷全冠
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