【三维设计】2013高中英语Unit21HumanBiologySectionⅠ语言点二应用落实课下作业北师大版选修7Ⅰ.选词填空1．Mybikebought10yearsagoisstillin_use.2．Theparentsaredeterminedtosupporttheirdaughter'scollegeeducationat_all_costs.3．Theychosesomepeopleat_randominthestreettogivethequestionnaires.4．Tidyinguptheroom,shecame_acrosssomeoldphotographsinadrawer.5．Theteam'ssuccesswaslargelydue_toMary'sefforts.6．Ispentthreedaysputtingupacottagebutastormmadeitin_vain.Ⅱ.单项填空1．Hiseffortstoraisemoneyforhisprogramwere________becausenooneshowedanyintentiontotakeacentoutoftheirpockets.A．inplaceB．insightC．ineffectD．invain解析：选D。考查invain的用法。inplace“在适当的位置，准备就绪”；insight“在视线内”；ineffect“生效，起作用”；invain“徒劳”。根据句意“他为他的项目筹集资金的努力付诸东流了，因为没有一个人愿意从腰包里掏出一分钱。”可知应选D。2．ChinesegovernmentpreventedSwineFlufromspreading________.A．atacostB．atthecostC．atallcostsD．atcost解析：选C。句意：中国政府将不惜一切代价阻止猪流感蔓延。atallcosts“不惜一切代价，无论如何”。3．Whenhegothome,hejustplacedhisfilmticket________.Nowhedoesn'tknowwheretofindit.A．atrandomB．invainC．onoccasionD．bychance解析：选A。考查词组辨析。atrandom“随便地，随意”；invain“徒劳，白费力气”；onoccasion“偶尔，偶然”；bychance“偶然”。根据句意“当他到家时，他只是随便把电影票放了起来。现在，他找不到票了。”可知应选A。1
