19.sin(72°) Teeth are important parts of our body.If we want to keep our teeth healthy and clean,we should brush teeth at least twice a day.How can we brush our teeth?Of course by using toothpaste and toothbrushes.But do you know the history of toothpaste? About 7,000years ago,Egyp...
根据第一段Rainforestsarethickforestsinthehotpartsoftheworld.(热带雨林是世界热带地区茂密的森林。)可知热带雨林是世界热带地区茂密的森林。故选B。(2)代词指代题。根据第二段Theyarethelungsoftheearth.(它们是地球的"肺"。)可知They在此处为"肺",图片D是肺。故选D。(3)段落大意题。根据第二段Rainforestsare...
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根据倒数第二段ThehoneyguidesinTanzaniawereoverthreetimesmorelikelytocooperatewhenhearingthecallsoflocalHadzapeoplethanthecallsof"foreign"Yao.ThoseinMozambiquewerealmosttwicemorelikelytocooperatewhenhearingthelocalYaocallthanthe"foreign"Hadzawhistles.(坦桑尼亚的蜜䴕在听到当地哈扎族人的叫声时,配合的可能性是听到"...
Thewritingbrushisoneofthefourimportantobjectsinthestudy.Itusuallyhastwoparts:theheadandtheshaft(杆). (1)___Andtheshaftismadeofbamboo,wood,aswellassomeothermaterials. (2)___TheyaretheHuwritingbrush,theXuanwritingbrush,theDaiyuexuanwritingbrush,andtheHoudianwritingbrush.Amongthem,theHuwritingbrushhasalway...
Bulletin of The Geological Society of ChinaBlack, D. ( 1932 ). “Skeletal remains of Sinanthopus other than skull parts” . Bull. geol. Soc. China , 11 , 365 .Black (Davidson). Skeletal remains of Sinanthropus other than skull parts. (Bulletin of the Geological Society of China, vol...
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Sincethetruncationof asentenceto alonepredicate(Detistuchat,“Thechildrenareknocking”→Stuchat,“Theyareknocking”)doesnotaffectthefunctionofthewholeunit,thepredicateconstitutesaminimumsentenceandisconsideredaconstituent.Themanyinstancesinwhichtheformal-syntacticandlogical-communicativestructuresof asentencedonotcoincid...