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
2024-05-12
19
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 a process in which water diffuses from a higher to a lower concentration. For 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 both outside and inside. The body of a fish acts the same way, 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. 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. Since fish cannot allow their salt content to be diminished, their kidneys work overtime to expel excess 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 it causes the fish to constantly lose water in order to equalize salt concentration inside and outside the body to partly compensate for the water loss, ocean fish actually drink water through their mouths. And to get rid of the excess salt they take in by drinking seawater, they also get some salt off their body.
8.What does the speaker say determines how fish drink water?
9.What do fish do to stay healthy?
10.Why do fish in fresh water make their kidneys work overtime?
选项
A、Which kind they are.
B、Their surroundings.
C、The shape of their body.
D、What they eat.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3595446.html
相关试题推荐
[originaltext](32)Mostpeoplepicturesharksashuge,powerful,frightenin
[originaltext]WhentheUnitedStatesGeologicalSurveymakesitsannualrep
[originaltext]W:Ok,thiswillbemytreat.M:Oh,no,youdon’t.W:Allright
[originaltext]W:Ok,thiswillbemytreat.M:Oh,no,youdon’t.W:Allright
[originaltext]M:Paula,willyoubereadytoleaveateight?Theweatherisnot
[originaltext]M:Paula,willyoubereadytoleaveateight?Theweatherisnot
[originaltext]M:Paula,willyoubereadytoleaveateight?Theweatherisnot
[originaltext]M:Paula,willyoubereadytoleaveateight?Theweatherisnot
[originaltext]Therearesomanydifferentkindsofanimalsallaroundthew
[originaltext]Therearesomanydifferentkindsofanimalsallaroundthew
随机试题
Mostpeoplewhotravellongdistancescomplainofjetlag(飞行时差反应).Jetlagma
HESITANCY:ALACRITY::A、weather:dangerB、torpor:vigorC、adulation:attract
[A]apparent[B]automatic[C]Consequently[D]Decidedly[E]decline[F]delightful[G]enr
Evaluatingemployeeperformanceisakeyareaofmanagementskills.Thechal
Hewasappointedchairmanofthedepartmentin_______toMr.Chan.A、recessionB
Manypeoplewholiveincitiessaythattheydislikecitylife.Theysaythe
Itissurprisingthathe__________(竟然责骂他的女朋友)inthestreet.shouldscoldhisgir
感冒辨证论治
鉴定单纯甲状腺肿与甲亢的较好方法是A.BMR测定 B.血清T测定 C.I甲状
(2016年真题)耐蚀(酸)非金属材料的主要成分是金属氧化物、氧化硅相硅酸盐等。
最新回复
(
0
)