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

游客2025-02-09 37

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

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Theypressedaheadwiththeliquidationofhostileelementsamongpeople.A、exami

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FirstBankofEnglandAddress:48NorthSquare,LondonWSSR5KL,UKTel

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Whatdidthewriter’sfamilydowhenhewas13?Whenhewas13,hisfamily______

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