16. assess

　　vt. ①對(duì)…進(jìn)行估價(jià)：assess the value of a house 估算房子的價(jià)值

　�、谠u(píng)價(jià)，評(píng)論：It is difficult to assess the impact of the president's speech.

　　17. assure

　　vt. ①(of)使確信，使放心：The news assured me.

　�、谙颉�保證：I can assure you of the reliability of the information.

　　18. athlete

　　n. 體育家，運(yùn)動(dòng)員

　　19. atmosphere

　　n. ①大氣(層)

　�、诳諝猓篴 moist atmosphere 潮濕的空氣

　�、蹥夥�，環(huán)境：The atmosphere over dinner was warm and friendly.

　　20. attribute

　　vt. (to)把…歸因于：The deaths of the two people are attributed to heart.

　　n. 屬性，品質(zhì)：Kindness is one of her many attributes.

　　21. auction

　　vt. 拍賣;競(jìng)賣n. 拍賣

　　22. avoid

　　vt. 避免，回避，逃避：I drove carefully to avoid an accident.

　　avoid doing

　　23. aware

　　a. (用作表語(yǔ)，與介詞of 連用)知道的，意識(shí)到的：Are you aware of the time?

　　24. bloom

　　n. 花(朵)：a lotus bloom 荷花

　　vi. 開花：The roses have been blooming all summer.

　　25. boom

　　n. ①(雷、炮等)低沉的隆隆聲

　�、�(營(yíng)業(yè)等的)激增，(經(jīng)濟(jì)等的)迅速發(fā)展： business boom 經(jīng)濟(jì)繁榮vi./vt.興隆，迅速發(fā)展：

　　The tourist industry is booming.

　　26. break

　　vt./vi. (broke，broken)①打破，折斷，打碎：The boy broke the teapot.

　�、谄茐�，違反：break the agreement 破壞協(xié)定

　　n. 暫停，休息，課間休息：Now let's have a break.

　　break away( from ) 突然離開，強(qiáng)行逃脫

　　break down 損壞;分解，瓦解;(健康等)垮掉，崩潰

　　break in 強(qiáng)行進(jìn)人，闖入;打斷，插嘴

　　break into 非法闖入，強(qiáng)行進(jìn)入

　　break off 中斷，突然停止

　　break out 逃出，逃脫;突然出現(xiàn)，爆發(fā)

　　break through 沖破，突圍;取得突破性成就

　　break up 中止，結(jié)束;打碎，粉碎;散開，驅(qū)散

　　27. canal

　　n. 運(yùn)河，溝渠

　　28. candidate

　　n. ①候選人，申請(qǐng)求職者：The reporter asked the candidate some tough questions.

　　②投考者：Most candidates passed in grammar.

　　29. capital

　　n. ①首都，首府

　　②大寫字母：write in capitals 用大寫字母寫

　�、圪Y本，資金：You need a lot of capital to start up a newspaper.

　　a. 主要的，首要的

　　30. captain

　　n. 機(jī)長(zhǎng)，船長(zhǎng)：The captain announced that the plane would take off soon.