序数效用理论下，消费A商品给消费者带来效用值是5，消费B商品给消费者带来的效用值是20，可以认为B的效用是A的4倍。

序数效用理论下，消费A商品给消费者带来效用值是5，消费B商品给消费者带来的效用值是20，是否可以认为B的效用是A的4倍。

4.载波L2上加载有C/A码和P码。

41.-Childrenusingthepoolmustbe______byaparentatalltimes.-

42.-AsIjust_____,itwastoolatetogoout.-

43.-Afterweheardthesadnews,tears_____fromoureyes.-

44.-_____theBible,Adamwasthefirstman.-

45.-Howwillthewarimpact______thisgeneration?-

ListeningComprehensionPart1Directions:Therearetwonewsitemsinthissection.You’regoingtolistentotherecordingtwice,checkyouranswersasyoulistenthesecondtime.Newstwo4.WhatistheapproximatepercentageofgreenhouseemissionscausedbyenergyproductionintheUS?

ListeningComprehensionPart2Directions:Inthissection,you’llheartwolongconversationsfortwice,listencarefullyandchoosethebestanswertothequestionsyouhear.Conversationone6.Whatisthetopicoftheinterview?

ListeningComprehensionPart2Directions:Inthissection,you’llheartwolongconversationsfortwice,listencarefullyandchoosethebestanswertothequestionsyouhear.Conversationone7.HowmanymigrantworkerssettleinthebigcitiesinChinaeveryyear?

ListeningComprehensionPart2Directions:Inthissection,you’llheartwolongconversationsfortwice,listencarefullyandchoosethebestanswertothequestionsyouhear.Conversationtwo8.Whatdidthefirstspeakerlearninacourseontablemanners?

ListeningComprehensionPart2Directions:Inthissection,you’llheartwolongconversationsfortwice,listencarefullyandchoosethebestanswertothequestionsyouhear.Conversationtwo9.WhenitcomestoChinesetablemanners,shouldpeopletalkwhileeating?　

ListeningComprehensionPart2Directions:Inthissection,you’llheartwolongconversationsfortwice,listencarefullyandchoosethebestanswertothequestionsyouhear.Conversationtwo10.WhatdidthespeakersayaboutChineseandwesterners’tablemanners?

ListeningComprehensionSectionADirections:You’regoingtolistentotherecordingtwice.Choosetherightanswerforeachquestionaccordingtowhatyouhear.ConversationThree4.WheredoesJohnworknow?