147.substance148.mixture149.oxygen150.electricity151.stage152.conclusion153.aim154.reaction155.electrical156.equipment157.react158.potassium159.sodium160.calcium161.magnesium162.aluminiumn.物質(zhì)n.混合物n.氧氣n.電n.階段；時(shí)期n.結(jié)論n.目標(biāo)；目的n.反應(yīng)adj.與電有關(guān)的；用電的n.設(shè)備；裝備vi.（化學(xué)）反應(yīng)n.鉀n.鈉n.鈣n.鎂n.鋁144.liquid145.expand146.Contractn.液體vi.膨脹vi.收縮163.zinc164.partial165.copper166.oxide167.rust168.boil169.ordinary170.steam171.float172.form173.dissolve174.balance175.crucible176.tongs；n.鋅adj.部分的；局部的n.銅n.氧化物vi.生銹vt.煮；煮沸adj.普通的；平常的n.蒸汽；水氣vi.漂浮vi.形成vi.溶解；分解；分離n.天平n.坩堝n.夾子；小鉗子177.flame178.facility179.lecture180.department181.AstonishedAdd…to…UsedtoIntheareaofBeproudofBesupposedton.火焰n.(常作復(fù)數(shù))設(shè)備；工具n.演講n.（大學(xué)的）科、系adj.吃驚的；驚愕的往…加入…過去（常常）在…領(lǐng)域?yàn)椤械津湴?自豪應(yīng)當(dāng)；理應(yīng)類詞辨析expand擴(kuò)大，擴(kuò)張。不僅指尺寸的增加，還可指范圍和體積的擴(kuò)大。extend伸出，延伸。指空間范圍的擴(kuò)大以及長(zhǎng)度、寬度的朝外延伸，也可指時(shí)間的延長(zhǎng)stretch伸開，拉長(zhǎng)，變松。一般指由曲變直、由短變長(zhǎng)的伸展，而不是加長(zhǎng)。強(qiáng)調(diào)形狀的變化①Ironreactswithwaterandair

toproducerust.②Applausecanreactgreatly

upon/onaspeaker.類詞辨析ordinary普通的；平常的；平凡的。強(qiáng)調(diào)等級(jí)和類屬方面普通。有“平庸無奇”之意，其反義詞extraordinary意為“不尋常的common普通的；常見的。強(qiáng)調(diào)經(jīng)常發(fā)生，司空見慣，可修飾人或物。也可指共同的、共存的。短語(yǔ)commonsense意為“常識(shí)”，have...incommonwith...usual通常的；慣常的；慣例的。強(qiáng)調(diào)依照慣例來判斷，有“遵循常規(guī)”之意。asusual意為“像往常一樣”。normal正常的；合乎標(biāo)準(zhǔn)的。強(qiáng)調(diào)在正常情況下應(yīng)有的，短語(yǔ)returntonormal意為“恢復(fù)正?！?。5.ordinaryA.1.Snowis___incoldcountries.2.LastSunday,hewenttoworkas___.3.Thiswasnota(n)____operationandthiswasnota(n)____patient.4.Relationsbetweenthetwocountriesarebackto____.B.Hergoodhealthischieflyduetoproperdietand____exercise.A.commonB.ordinaryC.regularD.normal6.formv.形成n.形式；表格

intheformof以......的形式inbad/goodform狀態(tài)不好/好formthehabitof養(yǎng)成.......的習(xí)慣fillin/outaform填表格taketheformof采取......的形式；1）.Pleasefillin/outtheforminblackink.2).Weshouldformagoodhabittokeephealthy.1).Carspollutetheair_____wastegas.(汽車以廢氣的形式污染空氣)2).ChinaDailyhasninewebsitesinthree

languagesandthreemobileplatforms，

___Asia's

Biggestnetworkof

English-language

newsandinformation.

A．forming

B．formed

C．form

D．toform7．balancen．天平；秤；平衡；結(jié)余；余額

vt.權(quán)衡，使平衡重點(diǎn)短語(yǔ)：aheadof在……前面；比……早；超過；領(lǐng)先lookahead向前看；