翻译：It is no use telling grown-up children not to make mistakes, both because they will not believe you, and because mistakes are an essential part of education.
我就担心丧失机会。不抓呀，看到的机会就丢掉了，时间一晃就过去了。（）
A、TheonlythingIworryaboutisthatwemayloseopportunitiesIfwedonseizethem,theywillslipthrough’tourfingers,timespeedsby
B、TheonlythingIworryaboutisthatwemayloseopportunitiesDon’tseizethem,theywillslipthroughourfingers,becausetimespeedsby
C、TheonlythingIworryaboutisthatwemayloseopportunitiesIfwedon’tseizethem,theywillslipthroughourfingersNowthattimefliesfast
D、TheonlythingIworryaboutisthatwemayloseopportunitiesIfwedon’tseizethem,theywillslipthroughourfingersastimespeedsby
我感谢陆登庭校长的邀请，使我有机会在这美好的金秋时节来到你们这座美国古老而又现代化的学府。（）
A、IthankPresidentRudenstinetoinvitemetothisoldyetmoderninstitutionoftheUnitedStatesinthisgoldenfall
B、IwishtothankPresidentRudenstineforinvitingmetothisoldyetmoderninstitutionoftheUnitedStatesinthisgoldenfall
C、IthankPresidentRudenstineforinvitingmetothisancientyetmoderninstitutionoftheinthisgoldenautumn
D、IwishtothankPresidentRudenstinetoinvitemetothisancientyetmoderninstitutionoftheinthisgoldenautumn
中国自20世纪60年代开始进行海洋油气资源的自营勘探和开发。（）
A、Sincethe1960s,Chinabegantoexploreandexploitoffshoreoilandgasresourcesonitsown
B、Beginningfromthe1960s,Chinabegantoexploreandexploitoffshoreoilandgasresourcesonitsown
C、Asearlyasthe1960s,Chinabegantoexploreandexploitoffshoreoilandgasresourcesonitsown
D、Untilthe1960s,Chinabegantoexploreandexploitoffshoreoilandgasresourcesonitsown
英语翻译：weaponsofmassdestruction