Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) wat

游客2025-02-09 11

问题 Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) water and carbon dioxide, also (contains) small quantities of (many other) substances.

选项 A、it is
B、and compounds
C、contains
D、many other

答案 A

解析

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Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) wat

Air,which(itis)amixtureofelementsoxygenandnitrogen(andcompounds)wat

Whatisthemainideaofthepassage?[br]Thepassagesuggeststhatoxygenrema

Whenwebreathe,oxygenispassedtospecialmoleculesintheblood,______itto

Waterplantsprovidefoodformanyanimals,and______alsosupplyoxygentothew

Ifplantsaretogrow,they______nitrogen.A、havetoB、hadC、havingD、musthaveD

Thecreationofliferequiresasetofchemicalelementsformakingthecomponen

Theypressedaheadwiththeliquidationofhostileelementsamongpeople.A、exami

Whyaretravelersexperiencingmorestressthaneverastheycheckinattheair

[originaltext]W:Youaregoingtogiveashortspeechofthanksforthespeaker

America’sTop5CleanestCitiesWhatisacleancity?

[originaltext]Crudeoilismeasuredinbarrels.Lastsummer,itsglobalpri

Theconceptofpeaceisaveryimportantoneinculturesallovertheworld.

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功能性腹痛的腹部检查特点是A.触及肿物 B.无固定压痛 C.有肌紧张 D.

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