题目内容：
Itisundoubtedthat/Thereisnodoubtthat什么意思
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选择题：It is undoubted that/ There is no doubt that什么意思
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______________（家庭人口多好还是人口少好）is a very popular topic，which is often talked about
______________（家庭人口多好还是人口少好）isaverypopulartopic，whichisoftentalkedaboutnotonlybycityresidentsbutbyfar
Science and technology have ___ in important ways to the improvement of agricult
Scienceandtechnologyhave___inimportantwaystotheimprovementofagriculturalproduction.A)attachedB)assist
Most people agree that the present role of women has already affected U.S. socie
MostpeopleagreethatthepresentroleofwomenhasalreadyaffectedU.S.society.___,ithasaffectedthetraditional
成人意识不清时气道堵塞的最常见原因是()。
成人意识不清时气道堵塞的最常见原因是()。A.胃内呕吐物反流B.舌后坠C.气道分泌物D.脱落的牙齿或异物E.卧位不舒适
钠的缺乏可使肌力下降而导致人体有倦怠感。()
钠的缺乏可使肌力下降而导致人体有倦怠感。()