Proper lighting is a necessary for good eyesight even though human night vision

游客2025-02-01 10

问题 Proper lighting is a necessary for good eyesight even though human night vision can be temporarily impaired by extreme flashes of light.

选项 A、needful
B、necessity
C、exigency
D、need

答案 B

解析词语应用本句意为：视力好需要有合适的照明，尽管人类的夜视偶尔会被极端的(过明或过暗)灯光的闪现削弱。所填之词在句中作表语，又由a限定，应填名词；因此排除选项A，因是形容词，表示：必要的，需要的；其余三个选项均为名词：B．necessity必要性，需要，必需品(指为了生存所必需的)；C．exigency苛求，紧急(事件)；D．need需要，必需，必需品(指需要某事或某物，尤其是它们还没发生或还无法利用)；因此B为答案。

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Proper lighting is a necessary for good eyesight even though human night vision

Properlightingisanecessaryforgoodeyesighteventhoughhumannightvision

Theborderwasactuallytwotowns,thoughnoonewasbigenoughtoamounttoany

Althoughthesocialsciencesdifferentagreatdealfromoneanother,theyshare

Theearliestformofartificiallightingwasfire,whichalsoprovidedwarmand

Johnishandsome______thescaronhisface.A、althoughB、evenifC、insteadofD、d

Peoplewhosepropertyisstolenshouldreporttothepolice.A、hadstolenB、isbe

Yourimproperwordswillgive______todoubtsconcerningyourtrueintentions.A、r

Thoughtheimitationjewelrycanfoolmanypeople,theycannot______uptoanexp

An"epigram"isusuallydescriedasabrightorwittythoughtthatisterselyan

Anepigramisusuallydefinedbeingabrightorwittythoughtthatisterselyan

Ifeveryouarecalled【C1】______tointroduceaspeaker;itwouldbewellfor

Thefirst,second,andthethirdawardswenttoJack,Tom,andHarry______.A、res

Aspyistryingtosendasecretmessage,we’retryingtodecodehismessage,an

Cheatingscandalshaverockedanumberofschooldistrictsacrossthecountr

直肠指诊时发现前列腺腺体内有坚硬如石的不光整结节，最可能的是A.前列腺癌 B.

异烟肼具有较强的还原性，易被氧化的原因，是化学结构中含有A:吡啶环 B:酰胺键

呼衰患者出现缺氧伴二氧化碳潴留的主要机制是（）。A.氧耗增加 B.肺动-静脉

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A.马兜铃科 B.大戟科 C.毛茛科 D.防己科 E.石竹科防己原植物的

A. B. C. D.