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课后限时作业(七)限时/50分钟Ⅰ.单句语法填空1．Newtechnologieshavemadeitpossibletoturnoutnewproductsfasterandatalowercost.解析分析句子结构可知，此处为“make＋it＋adj.＋todo”结构，其中it作形式宾语，动词不定式toturnout…cost为真正的宾语。句意：新兴科技已经使得以更快的速度且更低的成本生产新产品成为可能。2．Inthecommunitymeeting,theyaremakingeveryendeavourtowiden(wide)thediscussiontoincludetheenvironmentalissues.解析endeavourtodosth努力做某事。句意：在社区会议中，他们正在尽量拓宽讨论范围以纳入环境问题。3．Recently,astudyshowsthatsmokingincreasestheriskofheartattack,andregularlydrinkingalcoholmaylower(low)it.解析句意：最近，一项研究表明吸烟会增加患心脏病的风险，而规律性饮酒也许会降低这种风险。4．Thevictims'familiesofthemurderhaveappealedtotheSupremeCourttohaveadefinitiveanswer.解析appealto向……申诉。句意：谋杀案的被害者家属已经请求最高法院给出确切的答复。5．Thischarmingcottagedatesbacktothe15thcenturyandisasprettyasapicture,withitsthatched(茅草盖的)roofandbeautifulgarden.解析句意：这所美丽的村舍可追溯到15世纪，有茅草房顶和美丽的花园，漂亮极了，简直和画上的一样。6．Themaleofthespeciesistypically(typical)smallerthanthefemale.解析此处要用副词作状语修饰形容词比较级。句意：这个物种的雄性通常比雌性小。7．Rosesmaynotberareornewtoyou,buttheysureareamongthemostbeautifulflowersintheworldandthisisexactlywhywealllovethem.解析句意：或许玫瑰对你来说并不罕见或新鲜，但它们绝对是世上最美的花之一，这也恰恰是为什么我们都喜爱它的原因。8．Itisdifficultforustolearnalessoninlifeuntilwehavehad(have)thatlessonactually.解析用现在完成时代替将来完成时表动作在将来某时前完成。句意：学习某个教训是困难的，直到我们已经确实经历了这个教训。9．Giving(give)outawfulnoise,themachineworksdayandnightoutside.Icanhardlyputupwithit.解析现在分词作伴随状语。句意：外面的机器日夜不停地工作，发出讨厌的噪音，我几乎无法忍受这些声音。10．Ascaredchildneedsthecomfortandsecurityofalovinghand,orahug,oralaptositon.解析不定式短语修饰lap，意为“可以坐的大腿”，不定式后面的介词不能省略。句意：惊慌的小孩需要一只慈爱的手、一个拥抱、一个可坐的大腿，来获得安慰和安全感。Ⅱ.阅读理解AJustwhenscientiststhinktheyhavediscoveredandrecordedeveryspeciesofinsectthatcrawlsontheearththeyfindsomethingnew.Earlierthismonth,PeterJager,theheadofFrankfurt'sSenckenbergResearchInstitutereportedthediscoveryofauniqueeyelessspider!Thecreaturethathasalegspan(跨度)ofsixcentimetersandabodysizeofjusttwelvemillimeterswasfoundinacaveinsidethetinynationofLaos,inSoutheastAsia.ItwasidentifiedasamemberoftheHuntsmanspider,alargefamilythatconsistsof1,100species.However,theothermembersofthefamilyallhaveeyes.Thespideristhefirstonethathasnoeyes.Thescientistsbelievethatthereasonforthelackofeyescanbethatthesespidersspendtheirentirelifeinsidecaves.InthepasttheyhaveseenothermembersoftheHuntsmanspiderslivingincaveswithsixorlesseyes.Theybelievethatthekindofspiderhasadaptedtothefactthattheydonotreallyneedtheeyestosuchanextrememeasurethattheyhavedispensedwiththemaltogether.Buttheyarenottheonlycreaturetohavedonethat.Overtheyears,scientistshavediscoveredcompletelyblindcavefish,andevenafreshwatercrab,whichhappenstoliveinthesamecaveasthiseyelessspider!SurroundedbyBurmaandChinaonthenorthwest,Vietnamontheeast,CambodiaontheSouthandThailandonthewest,thelandlockednationofLaoshasbeenatreasuretrove(宝藏)ofanincrediblenumberofnewandexoticspecies.InthelastfewyearsresearchershavediscoveredtheSaol...