1 . At present, a key ________（limit）of e-waste recycling is the lack of certification of detailing the types and amounts of metals contained in electronic goods. （用所给词的适当形式填空）

3 . 词性转换
1. complete adj.完全的；彻底的 vt.完成，结束→________ n．完成，结束
2. harmony n．融洽相处，和谐→________ adj.(关系)和睦的，和谐的；协调的
3. harm v．伤害，损害→________ adj.有害的→________ adj.无害的
4. agriculture n．农业→________ adj.(与)农业(有关)的
5. beauty n．美，美丽→_________adj.美丽的
6. narrow adj.狭窄的，不宽的→________ adv.狭窄地；勉强地
7. limit v．限制；限定；使限于 n．界限；限定；范围→________ adj.有限的→________ n．限制，局限
8. benefit n．好处，益处→________ adj.有益的，有利的
9. pleasure n. 愉快；快乐→________ adj.令人愉快的
10. energy n．力量，活力→________ adj.精力充沛的

7 . If a remark is quoted out of ________, the circumstances in which it was said are not correctly reported, so that it seems to mean something different from the meaning that was intended.

A．context

B．imagination

C．limitation

D．expectation

8 . As a rule, the students who fail to meet these ________ will not be admitted to the university.

A．considerations

B．limitation

C．situations

D．requirements