问题 问答题 简答题

简述锯削薄壁管的方法。

答案

参考答案:

锯削薄壁管时不可从一个方向锯削到结束,应当锯条锯削近管子内壁处,将管子向推锯方向转过一个角度,锯条再依原来的锯缝继续锯削,不断转动,不断锯削,直至锯削结束。

阅读理解

Mary didn’t understand such sentences as“She is blue today”,“You are yellow”,“He has a green thumb”,“He has told a white lie”and so on.And she went to the teacher Mrs James for help.

Mary:Mrs James,there is a colour in each of the sentences.What do they mean?

Mrs James:In everyday English,Mary,blue sometimes means sad,yellow afraid.A person with a green thumb grows plants well and a white lie is not a bad one.

Mary:I’m afraid I don’t understand them a11.Would you give me an example for“a white lie”?

Mrs James:Certainly.Now I just give you some cakes.In fact you don’t like it,but you don’t want to let me know it.Instead you say,“No,thanks.I’m not hungry.”That’s a white lie.

Mary:It sounds very interesting.Thanks very much.

Mrs James:You are welcome.Colours are meaningful.I think you will meet more sentences like these in the future.Please come to me if you have any questions.

小题1:Blue sometimes means sad in________English.

A.good

B.spoken

C.usual

D.poor小题2:I don’t have a green thumb,so all my plants________.

A.die off

B.grow well

C.look nice

D.are good小题3:David is yellow and he is________to climb the tall tree!

A.happy

B.clever

C.brave

D.afraid小题4:He didn’t like me to know________of the accident.He told me a white lie at last.

A.the reason

B.the true story

C.the meaning

D.the answer小题5:He is ________today.He is told that his father is seriously ill.

A.blue

B.yellow

C.green

D.white

选择题