题目内容

1.2Replace the underlined part in each of the following sentences with a word or phrase from the box below. Write your answer in the brackets. Make changes or additions where necessary.enable , dwarf, on track, and so forth, around the corner1. You see the lights in the students' reading room? They never go out at night these days because the final exams are drawing near. ( )2. At that time the working class was still too small to makea successful revolution there. ()3.The high-rise building in the back makes our old house seem small. ()4.The figures show that our economy is healthy and we are likely to achieve sustainable and balanced (平衡的) growth. ( )5.The two girls spent the whole night planning the summer events, get-togethers, dinner parties, and many other things of the kind. ()

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Select proper words to fill in the blanks.conserve, preserve, reserve, deserve1.We are ______________ these seats for my parents.2.Effective measures must urgently be taken to ___________ these endangeredspecies of wild animals.3.To ______________ a friend, three things are required: to honor him when present, praisehim when absent, and assist him in his necessities.

Match the phrases with correct Chinese meaning.

弧面型宝石一般使用()。

A. 硬盘抛光
B. 软盘抛光
C. 滚筒抛光
D. 振动抛光

加工的宝石表面出现“镜面效应”,磨粒磨削深度一般为()。

A. 10nm
B. 30nm
C. 50nm
D. 100nm

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