2 . 词性转换
1. sustain vt.维持； 遭受； 承受住→______________ adj.可持续的；合理利用的→______________ n.持续性； 能维持性
2. frequent adj.频繁的；时常发生的 v.常去，常到→______________ adv.频繁地；经常→______________ n.频率；频繁
3. restrict vt.限制； 限定；束缚→______________ n.限制规定；限制法规；约束→______________ adj.受限制的
4. harmony n.协调；和睦；融洽→______________ adj.和谐的
5. moderate adj.适度的；中等的；温和的 vi.& vt.缓和；使适中→______________ n.适度；适中；合理
6. annual adj.每年的；一年的 n.年刊；年鉴→______________ adv.每年地
7. origin n.起源；源头；起因→______________ adj.最初的；原始的→______________ adv.最初；起初→______________ vi.& vt.起源；发源；创立
8. conserve vt.保存→______________ n.对(环境、文物等)保护；保持
9. inspect vt.检查；视察；检阅→______________ n.检查；查看；视察→______________ n.检查员；巡视员
10. tolerate vt.忍受；包容；容许→______________ adj.宽容的；容忍的→______________ n.容忍

3 . World Consumer Rights Day is celebrated ________________ (annual) by consumer organizations worldwide. （所给词的适当形式填空）

5 . We set up an independent child helpline that provides support and information to hundreds of thousands of children ____________ (每年). （根据汉语提示单词拼写）

6 . The industry has grown by 30% ________ (annual) over the past 10 years.(所给词的适当形式填空)

7 . The Nobel Prize in literature is awarded ________ (annual) to an author who has produced the most outstanding work in the field of literature. (所给词的适当形式填空)

8 . The school sports meeting is held ________(每年地), which is well received. (根据汉语提示单词拼写)

9 . The event, watched by millions of people all over the country, takes place a______. (adv. once every year) (根据首字母单词拼写)

10 . For the Armstrongs, traveling abroad costs an arm and a leg ________ (annual).   (所给词的适当形式填空)