Unit4Astronomy:thescienceofthestarsⅠ.单词拼写1．Strenuousexercisecanoftendomore________(有害)thangood.2．Opportunities________(存在)inourcompanyforexperiencedengineers.3．Whathesaid________(使困惑)me.4．Therewasashortageof________(氧气)atthetopofthemountain.5．The________(氛围)overdinnerwaswarmandfriendly.6．Waterwasf________tothedevelopmentoflife.7．Thiskindofplantm________veryquicklyinwarmweather.8．Thesocials________needstobeimproved.9．Ifyouareright,mym________willbelessthanontheearthbecausethemoonissmallerandIwillbeabletomovemorefreely.10．V________crimeisonlyoneofthemaladiesaffectingmodernsociety.答案：1.harm2.exist3.puzzled4.oxygen5.atmosphere6．fundamental7.multiplies8.system9.mass10.ViolentⅡ.完成句子1．既然已做完了作业，你可以去玩会足球休息一下。________________you'vefinishedyourhomework,youcangoandplayfootballtohavearest.2．没有什么可以阻止我爱她。Nothingonearthcan________me________lovingher.3．努力干好你的工作，你一定会成功的。Doyourbestinyourcareer,andyou'llsucceed________________.4．甲型流感今年在全球多个国家爆发。H1N1flu________________inmanycountriesallovertheworldthisyear.5．给玛丽打个电话，她需要鼓励。GiveMaryacall;sheneeds________________.答案：1.Nowthat2.prevent;from3.intime4.brokeout5.cheeringupⅢ.单项填空1．Noticingsomebrokentoys______onthefloor,Ipickedthemupand________themonthechair,soIwasn't________.A．lay;lay;lyingB．lying;lay;lyingC．laid;laid;layingD．lying;laid;lying答案：D本题考查易混词lie,lay的用法辨析。句意：看到地上有一些弄坏的玩具，我把它们捡起来，放在椅子上，因此我一直没有躺着(睡觉)。第一空用lie(躺)的现在分词作补语；第二空为lay(放下)的过去式laid，与picked并列作谓语；第三空用lie的现在分词，与be一起构成过去进行时。2．Thegirllookedatmewitha______expression.Maybetheproblemwasquite______.A．puzzled;puzzlingB．puzzling;puzzledC．puzzled;puzzledD．puzzling;puzzling答案：A本题考查puzzle的用法。句意：这个女孩满脸迷惑地看着我。也许那个问题很让人迷惑。puzzled“迷惑的”，可修饰人，也可修饰expression,look等；puzzling“令人迷惑的，让人费解的”，常用来说明事物。3．Theymanagedto________theoldbuildingstowidenthestreetandbeautifythecity.A．breakdownB．pulldownC．putdownD．burndown答案：B本题考查动词短语辨析。句意：为了加宽街道、美化城市，他们已设法拆除了那些旧楼。pulldown“拆毁，推翻”，符合语境。breakdown“分解，中止”；putdown“放下，镇压”；burndown“烧光，烧成平地”，均不符合句意。4．—I'mthinkingoftomorrow'smathste