6.A.calculated B.listened C.drank D.explained

7.A.eagerly B.gradually C.gratefully D.finally

9.A.automatic B.slow C.independent D.changing

10.A.confused B.informed C.pleased D.hit

11.A.on loan B.on purpose C.on sale D.on balance

13.A.life B.progress C.performance D.investment

14.A.contract B.conversation C.negotiation D.argument

15.A.lent B.sold C.showed D.offered

16.A.recalled B.defined C.recognized D.declared

17.A.tool B.method C.way D.rule

18.A.provide B.buy C.give D.deliver

19.A.grow B.survive C.move D.gather

20.A.difficult B.random C.firm D.wise

第二节 阅读理解

　　In the United States alone, over 100 million cell-phones are thrown away each year. Cell-phones are part of a growing mountain of electronic waste like computers and personal digital assistants. The electronic waste stream is increasing three times faster than traditional garbage as a whole.

　　Electronic devices contain valuable metals such as gold and silver. A Swiss study reported that while the weight of electronic goods represented by precious metals was relatively small in comparison to total waste, the concentration(含量)of gold and other precious metals was higher in so-called e-waste than in naturally occurring minerals.

Electronic wastes also contain many poisonous metals. Even when the machines are recycled and the harmful metals removed, the recycling process often is carried out in poor countries, in practically uncontrolled ways which allow many poisonous substances to escape into the environment.