Ⅰ.单词拼写

　　1．We must encourage the planting of new trees and preserve (保护) our existing woodlands.

　　2．Britain wants to maintain (维持) its position as a world power.

　　3．They have made an urgent request (请求) for international aid.

　　4．The high street is closed and traffic is being diverted (改道)．

　　5．It'll be difficult to hire that many new staff in such a short time span (时距)．

　　6．The local hospital care is primitive (原始的) and unreliable.

　　7．Doctors strongly recommend (建议) that fathers should be present at their babies' birth.

　　8．A sale is being held to raise funds (资金) for the school.

　　9．The Black Sea is facing ecological catastrophe (毁灭性的大灾难) as a result of pollution.

　　10．List (列清单) the things you want to buy.

　　Ⅱ.拓展词汇

　　1．agreement n．协议 → agree v．赞同；同意

　　2．invest v．投资 → investment n．投资

　　3．existence n．存在 →exist v．存在；生存

　　4．relation n．亲属；亲戚 →relationship n．关系，关联 →relate v．使......有联系；叙述 →related adj.有关系的，相关的

　　5．sharpen v．使变锋利 →sharp adj.锋利的 → sharply adv.锋利地；锐利地

　　6．evolution n．进化；演变 →evolve v．发展；(使)进化

　　7．exposure n．暴露；显露 →expose v．暴露；(使)曝光；揭露 →exposed adj.无遮蔽的；无保护的

　　8．contribute v．促成 →contribution n．贡献；捐献 →contributor n．捐献者；投稿人

9．endangered adj.濒危的 →endanger v．使遭受损失，危及 →danger n．危险 →dangerous adj.危险的