题目内容

53.关于主动脉弓的描述，哪项是错误的？

A. 起止点均位于第4胸椎体下缘平面
B. 前方有左迷走神经及左膈神经跨过
C. 下缘可见动脉韧带及其后方的左喉返神经
D. 跨右肺根
E. 动脉壁外膜下有丰富的压力感受器

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18．关于上腔静脉的描述，哪项是正确的？

A. 位于上纵隔中部
B. 由左、右头臂静脉在右侧第2胸肋结合处后方汇合而成
C. 沿升主动脉右侧垂直下行
D. 右侧为右迷走神经
E. 后方有食管和奇静脉

55.关于心包的描述，哪项是错误的？

A. 由纤维心包和浆膜心包组成
B. 纤维心包是一层厚而坚韧的纤维膜，与出入心的大血管外膜相延续
C. 浆膜心包即心外膜
D. 心包腔为浆膜心包脏、壁二层互相转折围成的
E. 心包窦为心包腔的一部分

Intheboxesbelowaresomeofthewordsyouhavelearnedinthisunit.Completethefollowingsentenceswiththem.Changetheformwherenecessary,.TextApeculiarsuffice presiderearspecializeTextBassociate implement reconcilecombine indispensableemphasis negotiateIllusionphase1) I often summerwithholidays.HowIwishIcouldbeonvacationnextsummer!2)Incollegehismajorwasbiology,butnowhein the saleofcomputers.3)PrejudicewithignorancedestroysthehopesofmanyAIDSsufferers.4)Ithinkweshouldputasmuchonpreventingdiseasesaswedooncuringthem.5)Thebudgetofthecompanyscarcelytopaytheemployees,letalonebuyanynewequipment.6) Thenewheatingsystemisinthetrialofitsoperation;it'sduetobeputintofulloperationnextwinter.7) Havingoverthecompanyfor30years,hehaswitnessedallitsupsanddowns.8) Hehashisownstyleofsolvingproblemswhichyou'llsoongetusedto.9) NowthatbothJulieandherhusbandhavelosttheirjobs,howwilltheytheirsonsanddaughters?withtheterrorists10)Thegovernmentsays it will not with the terrorist; onthecontraryitwillfightback.11)Thisguidebookisfortravelersinthisremoteareaofthecountry:theycan'tgowithoutit.12)HefinallyrealizedthathisideaoflearningtoreadandwriteinEnglishwellinthreemonthswasjustan.13)Thecommittee'ssuggestionssoundreasonable,yetwhethertheycanberemainsaproblem.14)Workersusuallydemandhighwageswhilethebossalwaysseekshighprofits----it'salmostimpossibletothesetwoaims.

招标投标是一种竞卖方式，对买方比较有利。（）

A. 对
B. 错