首页
登录
职称英语
[originaltext] Fish live in water, but do they drink it? The answer is yes,
[originaltext] Fish live in water, but do they drink it? The answer is yes,
游客
2023-08-31
36
管理
问题
Fish live in water, but do they drink it? The answer is yes, but how fish drink water depends on where they live. Water gets into a fish’s body through osmosis. Take a cell as an example, if there is more water outside of a cell than inside, water will try to flow into the cell until there is the same concentration of water on either side of the cell’s membrane. The body of a fish acts the same way, (33) either absorbing or losing water depending on its surroundings.
Whether a fish absorbs or loses water is based on the fact that all fish must maintain a certain amount of salt in their bodies to stay healthy. (34) Fish that live in fresh water have a higher concentration of salt in their bodies than the surrounding water. Consequently, water continuously flows into the fish’s body to attempt to dilute the amount of salt in the fish until it is equal to the amount of salt in the surrounding water.
Ocean fish have the opposite problem. Surrounded by salt water, their bodies contain a relatively lower concentration of salt than the ocean water. In this case osmosis causes the fish to constantly lose water in order to equalize salt concentration inside and outside the fish. To partially compensate for the water loss, ocean fish actually drink water through their mouths. And (35) to get rid of the excess salt they take in by drinking seawater, they excrete some salt through cells in their gills.
选项
A、They lose water constantly.
B、They contain a relatively lower concentration of salt.
C、They neither lose nor absorb water.
D、They possess a relatively higher concentration of salt.
答案
D
解析
根据原文,咸水鱼体内的盐分低于周围的水环境,而淡水鱼体内的盐分相对高于其周围的水环境,故选D项。
转载请注明原文地址:https://tihaiku.com/zcyy/2973084.html
相关试题推荐
[originaltext]Botany,thestudyofplants,occupiesapeculiarpositionin
[originaltext]Thecostisgoingupforjustabouteverything,andcolleget
[originaltext]W:Howareyoudoing,Christopher?M:Tobehonest,I’mreallyfe
[originaltext]W:Howareyoudoing,Christopher?M:Tobehonest,I’mreallyfe
[originaltext]W:Howareyoudoing,Christopher?M:Tobehonest,I’mreallyfe
[originaltext]M:I’mplanningtobuyahouse,andI’dliketofindoutabouta
[originaltext]M:I’mplanningtobuyahouse,andI’dliketofindoutabouta
[originaltext]M:Whyareyouleavingsoearly?Themoviedoesn’tstarttillsev
[originaltext]M:Whyareyouleavingsoearly?Themoviedoesn’tstarttillsev
[originaltext]M:Whyareyouleavingsoearly?Themoviedoesn’tstarttillsev
随机试题
Whatmakesagoodmanager?Thereisn’tmagicformulaforgoodmanagement,of
Amanstepsonwhatseemslikesolidgroundbutdiscoverswithhorrorthatt
Writeonthefollowingtopic.It’swhileyouarepatientlytoilingatthelittle
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendp
以下哪个表述最能反映当前首席审计执行官对人力资源管理与开发的责任?A.首席审计执
下列关于贷款支付的表述,正确的是( )。A.银行应根据借款人的行业特征、经营规
下列哪项不是肝癌病人的护理措施A.提供营养丰富的饮食 B.根据医嘱给镇痛药
心气亏虚者闻诊的特点是A.郑声 B.上气 C.独语 D.语言謇涩
关于巷道施工设备的使用,合理的是( )。A.凿岩台车钻眼与铲斗侧卸式装岩机装矸
男性,42岁,丰盛酒宴饱餐后,上腹剧痛,伴恶心,呕吐,吐物为胃内容物,吐后腹痛更
最新回复
(
0
)