阅读理解Fishhaveears.Really.They'requitesmallandhavenoopeni...
问题详情:
阅读理解
Fish have ears. Really. They're quite small and have no opening to the outside world carrying sound through the body. For the past seven years, Simon Thorrold, a university professor, has been examining fish ears, small round ear bones called otoliths.
As fish grow, so do their otoliths. Each day, their otoliths gain a ring of calcium carbonate(碳*钙) looking through a microscope and counting these rings, Thorrold can determine the exact age of a young fish. As a fish gets older, its otoliths no longer get daily rings. Instead, they get yearly rings, which can also be counted, giving information about the fish's age, just like the growth rings of a tree.
Ring counting is nothing new to fish scientists. But Thorrold has turned to a new direction. They're examining the chemical elements of each otolith ring.
The daily ring gives us the time, but chemistry tells us about the environment in which the fish swam on any given day. These elements tell us about the chemistry of the water that the fish was in. It also says something about water temperature, which determines how much of these elements will gather within each otolith ring.
Thorrold can tell, for example, if a fish spent time in the open ocean before entering the less salty water of coastal areas. He can basically tell where fish are spending their time at any given stage of history.
In the case of the Atlantic croaker, a popular saltwater food fish, Thorrold and his assistant have successfully followed the travelling of young fish from mid-ocean to the coast, a journey of many hundreds of miles.
This is important to managers in the fish industry, who know nearly nothing about the whereabouts of the young fish for most food fish in the ocean. Eager to learn about his technology, fish scientists are now lending Thorrold their ears.
1. What can we learn about fish ears from the text?
A. They are small soft rings. B. They are openings only on food fish.
C. They are not seen from the outside. D. They are not used to receive sound.
2. Why does the writer compare the fish to trees?
A. Trees gain a growth ring each day. B. Trees also have otoliths.
C. Their growth rings are very small. D. They both have growth rings.
3. The Atlantic croaker is ___________.
A. a fish research B. a fishing company C. an ocean area D. a fish
4. Why is it important to study the chemistry of otolith rings?
A. The elements of the otoliths can tell the history of the sea.
B. Chemical contents of otoliths can tell how fast fish can swim.
C. We can know more about fish and their living environment.
D. Scientists can know exactly how old a fish is.
5. How would you understand “fish scientists are now lending Thorrold their ears”?
A. They are very interested in Thorrold's research findings.
B. They want to know where they can find fish.
C. They lend their fish for chemical studies.
D. They wonder if Thorrold can find growth rings from their ears.
【回答】
1C 2D 3D 4C 5A
知识点:日常生活类
题型:阅读理解
-
光明在低头的一瞬 ...
问题详情: 光明在低头的一瞬 迟子建 ...
-
阅读下面的文言文,完成1—4题。陈宗礼,字立之。少贫力学,袁甫为*东提点刑狱,宗礼往问学焉。淳祜四年,举进士。...
问题详情:阅读下面的文言文,完成1—4题。陈宗礼,字立之。少贫力学,袁甫为*东提点刑狱,宗礼往问学焉。淳祜四年,举进士。调邵武*判官,入为国子正,迁太学博士、国子监丞,转秘书省著作佐郎.入对,言火不循轨①。帝以星变为忧,宗礼曰:“上天示戒,在陛下修德布政以回天意。”又曰:“...
-
直角坐标系中,点P(1,4)在A.第一象限 B.第二象限 C.第三象限 D.第四象限
问题详情:直角坐标系中,点P(1,4)在A.第一象限 B.第二象限 C.第三象限 D.第四象限【回答】A知识点:平面直角坐标系题型:选择题...
-
(福建卷)8.简答题。(选做一题)(5分)(1)阅读下面的《三国演义》第十九回(下邳城曹*鏖兵)选段,完成后面...
问题详情:(福建卷)8.简答题。(选做一题)(5分)(1)阅读下面的《三国演义》第十九回(下邳城曹*鏖兵)选段,完成后面的题目。徐晃解陈宫至。(曹)*曰:“公台别来无恙!”宫曰:“汝心术不正,吾故弃汝!”陈宫被俘前辅佐的是谁?陈宫所说的“汝心术不正,吾故弃汝”,指的是什么事?请简述相关情节。(2...
相关文章
- Everyonethinkshe'llgofarinthiscompanybecausehehasallth...
- 阅读理解Nowadays,cellphonesarepartofourlives.Manypeoplehave...
- 阅读理解。Myfatherisseventy-fiveyearsoldthisyear.Buthelooksv...
- You'veseenpeopleinneedonthenewsafterahurricane,anearthq...
- 阅读理解MynameisBeckySmith.I'melevenyearsold.Ihaveonebrothe...
- 阅读理解。IreallyliketheSeaviewHotel.It'squitebig.Ithastwoh...
- 任务型阅读。BobSmithsayshenevergaveupthesearchforhisbeloved19...
- HereI'dliketoshareoneofmysurvivalexperienceswithyou.Las...
- 阅读理解January1stisNewYear'sDay.Peopleallovertheworldceleb...
- 阅读理解 Doyoubelievetherearealiens(外星人)?We’llmakeaphone...