1 . 词性转换
1. steady adj.稳定的→________________ adv.平稳地
2. mass n.块，团→________________adj.巨大的
3. economy n.经济→________________ adj.经济的
4. disturb v.干扰，扰乱→_________________ adj.令人不安的→________________ adj.烦恼的；心烦意乱的→________________n.打扰；骚乱
5. operate v.经营；操作→________________ n.经营者→________________ n.操作；经营；运转；手术
6. conserve v.保护；节省→________________n.保护→________________n.（动植物或古旧建筑的）保护工作者；环境保护主义者
7. apply v.申请→________________ n.申请人→________________ n.申请
8. favour n.支持，赞同→________________ adj.支持的
9. advertise v.（为……）做广告（宣传）→________________n.广告
10. negotiate v.谈判，协商→________________adj.可协商的→________________ n.谈判，协商
11. prefer v.更喜欢，偏爱→________________ n.优先(权)
12. qualify v.使具有资格→________________n.资格，技能条件→________________ adj.有资格的，合格的

2 . His economic program for the country was not ____________ (negotiate)．(所给词的适当形式填空)

3 . Something that is ______ (negotiation) can be changed or agreed upon when people discuss it. (所给词的适当形式填空)

4 . The seller said the price for the house was ________, but not by much.

A．distant

B．legal

C．negotiable

D．primitive

6 . As traditional festivals become more and more ______, many customs have disappeared.

A．commercial

B．distant

C．negotiable

D．primitive

7 . The seller said the price for the house was _____, but not by much.

A．commercial

B．distant

C．negotiable

D．primitive

8 . The price of the house was not ________ (可协商的), so we had to search for another one. (根据汉语提示单词拼写)

9 . How to protect the ______ ecosystem was taken seriously by the government.

A．negotiable

B．vivid

C．delicate

D．folk

10 . The rent is ________(negotiate) with the landlord and depends on when you can move in and how long you will rent. （用所给词的适当形式填空）