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

游客2024-01-01 59

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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