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

游客2023-12-31 29

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

IthoughtIjustmadeaperfectinnocuousremarkandhetookittoheartandfla

Whydoestheprofessormentionlighting?[originaltext]Nowlistentopartofac

他英语很流利，可还是要用译员——有时还挑译员的毛病——这样他就有时间考虑如何回答提问了。AlthoughfluentinEnglish,heuses—

Theyproperlyhavetobeveryfactual他们必须实事求是，这是应该的。

Jeffersonbelievedthatgovernmentsare,atbest,necessaryevil.杰弗逊认为建立政府总归不是好

科学技术在促进人类进步的同时，也逐渐将人类推向了环境恶化的深渊，它到底是福还是祸呢?Thoughsciencepromoteshumanprogress

Althoughhispeopledidnot______hisefforts,hekepttrying.A、agreewithB、ap

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Althoughthesocialsciencesdifferentagreatdealfromoneanother,theyshare

Theearliestformofartificiallightingwasfire,whichalsoprovidedwarmand

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