全优课堂英语选择性必修第一册(北师大版)习题答案UNIT 3 Period 2.docx

UNIT1PeriodTwo

基础练

Ⅰ.单词拼写

1．Itisreportedthatsomerare________(物种)havebeendiscoveredinthismountain.

2．NobodybutIshouldbeto________(责怪).

3．Thesharpnoisefromtheconstructionsitebadly________(影响)ourhealth.

4．These________(濒危的)animalsshouldbeundercarefulconservation.

5．Asyouknow,________(太阳光的)energycanbeusedinmanyfields.

6．Thefemalewantstofindawarmplaceto__________(孵化)hereggs.

7．Itwilltakemanyyearsbeforetheecologyinthisarea________(恢复).

8．Theclimatethisyearisquite________(异常的)fromaverageyears.

【答案】1.species2.blame3.affects4．endangered5.solar

6.hatch7.restores8．unusual

Ⅱ.短语填空

dependon;doone’spart;dieout;wipeout;betoblame;beatrisk

1．Hethinkstheyoughtto________________tomakesteadyprogress.

2．Thecookingtimeneeded______________theamountofthefood.

3．Onlyinthiswaycanwe________________theenemytroops.

4．Aloneinhisroom,heaskedhimselfwhetherhe________________fortheaccident.

5．Therearenewusesofwordscominginandolduses________________．

6．123,000people________________ofearlydeathoverthenext20years,thestudysaid.

【答案】1.dotheirpart2.dependson

3．wipeout4.wastoblame5.dyingout

6．wereatrisk

Ⅲ.单句语法填空

1．Hisfather,known__________askilledsurgeon,willcometogivealectureinourschool.

2．Inthelastthirtyyears,there____________(be)greatchangesineverywalkoflifeinourcountry.

3．Thedogbarkedawholenight,________keptmeawakeallnightlong.

4．Itisquitecertain________theirteamwilllosethegameintheend.

5．WithouttheInternet,ourlife________(be)differentfromwhatitis.

6．Thenumberofthese________(endanger)animalsisontheincreasetheseyears.

7．Myhenhas________(lay)twentyeggsthismonth.

8．Itisup________youtodecidewheretohaveabirthdayparty.

【答案】1.as2.havebeen3.which4.that

5．wouldbe6.endangered7.laid8.to

Ⅳ.完成句子

1．Shecantype________________60wordseverym