Linda feels exhausted because she _____ so many visitors today.A、has been having

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问题 Linda feels exhausted because she _____ so many visitors today.

选项 A、has been having
B、had been having
C、was having
D、had had

答案 A

解析 have／has been doing的用法是指过去的动作或状态从过去某时开始，持续到现在，可能持续下去，也可能刚刚结束，多用于可延续性动作.本题主句用的是一般现在时，所以从句也应该与现在时有关。如：Hehash’t been having much luck since he came here．(自从来到这里他就不太走运。)故A项为正确答案。

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Linda feels exhausted because she _____ so many visitors today.A、has been having

Whatisthemainideaofthepassage?[br]Theenergyissavedbecause______.A、

Therain______,thesoldierscontinuedtheirmarch.A、stoppingB、havingstopped

Havingatriparoundthecountryiscertainlygoodfortheoldcouple,butitre

Whydidtheelephantsitonthecar?Becausetheelephanttookittobehis_____

(send)______thebabytobed,themotherbegantoworkagain.Havingsent

Humanbeingsareafraidofratsmainlybecause______.[br]Thetextismainlyt

Humanbeingsareafraidofratsmainlybecause______.[br]Withgoodleaders,_

Humanbeingsareafraidofratsmainlybecause______.[br]Besidescarryingdis

Humanbeingsareafraidofratsmainlybecause______.[br]Brownratsaredange

Childrenusuallyenjoyplayinginthe(amuse)______parkbecausetherearemany

DearCustomer,Congratulations!Youhavejustpurchasedoneoftheworld’smost

[originaltext]Medicine,law,andtheologyareknownasthelearnedprofessi

Theresultofautomationmaywellbeanincreaseinemployment,sinceitis

C

胃穿孔患者行腹腔穿刺，抽出液的性质是A.稠厚脓液 B.易凝固血液 C.黄色、

针灸治疗肥胖之脾胃虚弱者，宜加用的腧穴是A.上巨虚、内庭 B.脾俞、足三里

下列物质中，可以采用二氧化碳灭火系统进行扑救的有（）。A．石蜡 B．硝化纤维

防火卷帘卷门机具有依靠防火卷帘自重恒速下降的功能，其操作臂力不得大于（）N。A

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在火灾发生初期，作为企业负责人的厂长应优先()。A.保护工厂财物 B.