Plant-a-Plant同步检测1

课时作业

（四）Unit2Lessons

7、8（20分钟50分）I.根据句意及汉语或首字母提示完成单词（5分）一

1.What areyou doing一（坑）.We aredigging a（覆盖）

2.Please thetable withthe cloth.（土壤）

3.Plants canstop frombeing washedaway.

4.Please cleanyour room.Ifs tood.一

5.What ahot day!一Yes.Lets sitin thes underthe tree.II.用所给词的适当形式填空（5分）（）

1.When isTree plantDay（）

2.Many peopleare worryabout theenvironment.（）

3.Hurry up,there isno timeleave.（）

4.Its agreat waylearn English.（）

5.Please remembercall mewhen youget there.m.单项选择（io分）

1.Its pleasantwith youon thephone.A.talk B.talks C.talking D.to talk

2.Yesterday shebought akite paper.A.made ofB.made fromC.making ofD.making from

3.Jenny wentout ofthe roomsaying aword.She wasreally angry.A.with B.no C.not D.without

4.There areonly severalleaves thetree;some birdsare singingthetree.A.in;on B.on;in C.under;in D.in;under

5.The flowersmake thegarden verybeautiful.A.look B.looks C.looking D.to lookIV.连词成句（10分）

1.can,clean,air,trees,help,the

2.is,apple,tree,there,an,here

93.flowers,to,important,are,people

4.the,plants,medicine,from,is,made

5.many,forest,live,animals,in,theV.补全对话（10分）从方框中选择最佳选项完成对话，有两项多余A.It cameout from the soilyesterday.B.Please passsome waterto me.C.A seed,of course.D.What doseeds needto growE.Would youplease plantitF.But howcan itbecome abudG.Roots growinto plants.A:Theres somethinggreen ina pot.Whats that,GrandmaB:Oh,its abud.]A:But whatcan becomea budB:2I planteda seedsome daysago.A:3B:Each seedhas avery smallplant insideit.It cansprout ata righttime.A:4B:They needwater,the righttemperature anda goodplace.A:What shallwe dothenB:Water it.5A:OK.

1.

2.

3.

4.

5.VI.阅读理解10分Leaves arenatures foodfactories.Plants takewater from the groundthroughtheir roots.They takea kind of gascalled carbondioxide CO2fromthe air.Plants usesunlight toturn water and CO2into glucose.Glucoseis akindofsugar.Plants useglucose asfood forenergy togrow.The wayplants turn waterand CChintoglucose is called photosynthesis.That meansputtingtogether withlight”.A chemicalcalled chlorophyllhelps makephotosynthesishappen.Chlorophyllis green.It givesplants theirgreen colour.As summerends andautumn comes,the daysget shorterand shorter.This ishow thetrees knowto begingetting readyfor winter.During winter,there isnot enoughlight orwater forphotosynthesis.Thetrees willrest,and liveon thefood theyhave storedduring thesummer.Theybegin toclose theirfood-making factories.The chlorophylldisappears fromthe leaves.Then,we beginto seeyellow andorange colours.A fewof thesecoloursstay in the leavesall thetime.We justcant seethem insummer,because theyare coveredup bythe greenchlorophyll.Red andpurple colourswe seein leavesare mademostly inautumn.In（枫树）,some trees,like maplesglucose isstored in the leavesafterphotosynthesis stops.Sunlight andthe coolnights ofautumn turnthis glucose（橡树）into red.The browncolour oftrees likeoaks is made fromwastes leftintheleaves.

1.The underlinedword“chlorophyll“inthefirst paragraphmeansin Chinese.叶绿素氧气胡萝卜素蛋白质A.B.C.D.

2.Where isCChfromA.Ground.B.Roots.C.Sunlight.D.Air.

3.The wayiscalledphotosynthesis.A.plants getCO2fromtheairB.plants takewater fromthe groundC.plantsturnwaterandCO2into glucoseD.plants useglucose asfood forenergy togrow

4.Red andpurple coloursin leavesare mademostly in.A.spring B.autumn C.summer D.winter

5.intheleaves changesinto redcolour inautumn.A.Sunlight B.WaterC.Glucose D.Chlorophyll答案解析答案:I.

1.hole

2.cover

3.soil

4.dirty

5.shade答案II.

1.Planting

2.worried

3.left

4.to learn

5.to callIII.答案1〜

5.DADBAIV.答案:1・Trees canhelp cleantheair

2.Is therean appletree here

3.Flowers areimportant topeople

4.The medicineismadefrom plants

5.Many animalslive inthe forest答案V.1〜

5.ACFDBVI.答案1〜

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