According to a team of researchers, an animals' ability to perceive(感知)time is linked to their pace of life.
"Our results lend support to the importance of time perception in animals where the ability to
perceive time in a very short time may be the difference between life and death for fast moving
creatures." commented lead author Kevin Healy from Trinity College Dublin.
The study was done with a variety of animals using a phenomenon based on the maximum speed of flashes of light an individual can see before the light source is seen as constant. Dogs, for example, have eyes with a refresh rate higher than humans.
One example of this phenomenon at work, the authors say, is the housefly and its ability to avoid being hit. The research showed flies "observe motion in a shorter time than our own eyes can achieve," which allows them to avoid being hit.
Professor Graeme Ruxton of the University of St Andrews in Scotland, who worked jointly(共同地) on the research project, said in a statement, "Having eyes that send updates to the brain at much higher frequencies than our eyes do is of no value if the brain cannot process that information equally quickly. Thus, this work highlights the impressive abilities of even the smallest animal brains. Flies might not be deep thinkers, but they can make good decisions very quickly."
In comparison the tiger beetle(虎甲蟲)runs faster than its eyes can keep up, basically becoming blind, which requires it to stop periodically to re-evaluate its prey's(獵物)position.
Our results suggest that time perception offers an as yet unstudied dimension along which
animals can specialize and there is considerable range to study this system in more detail.
1.What is the research mentioned in the passage mainly about?
A. Pace of life of animals. B. Time perception of animals.
C. Lifetime of small animals. D. Impressive abilities of animals.
2.Why can houseflies avoid being hit?
A. They can think very deeply before they act.
B. They can fly much faster than their eyes can keep up.
C. They can process the information as quickly as they receive it.
D. They can send information to brain more quickly than to their eyes.
3.What will a tiger beetle have to do to catch a moving prey?
A. Try to run as fast as it can. B. Prevent itself from becoming blind.
C. Slow down to gain its time perception. D. Stop occasionally to spot the prey again.
閱讀快車系列答案科目：高中英語 來源：甘肅省2016-2017學年高一下學期期中考試英語試卷 題型：閱讀理解
Camels are large animals living in dry areas. There are two species of camels; the Arabian camel with a single hump(駝背) from the dry desert areas of West Asia, and the Bactrian camel with two humps from Central and East Asia. Camels are over 7 feet tall and weigh over 1,600 pounds. They will live up to 40 to 50 years. Most camels are domesticated(馴化) and fed by people. Camels are plant-eaters．
Camels are very strong animals with wide, padded feet. They have thick leathery pads on their knees and chest. Camels have nostrils(鼻孔) that can open and close, protecting them from the desert environment. Bushy eyebrows and two rows of long eyelashes protect their eyes from sand. Their mouth is extremely tough, allowing camels to eat thorny(帶刺的) desert plants. Their widened feet help them move without sinking into the sand. Their thick coats reflect sunlight, and also protect them from the intense heat from desert sand. Their long legs help by keeping them further from the hot ground.
Camels can go without food and water for 3 to 4 days. They do not store water in their humps as is commonly believed．The humps are actually a container of fat. Camels are incredibly well-adapted to their environment. When conditions heat up, camels can increase their own body temperature, which prevents sweating and therefore water loss. They may not sweat at all during the day.
Camels are sometimes called “ships of the desert” because people ride them around the hot, dry deserts of the world. However, the number of camels is becoming smaller for various reasons.
1.According to the passage, camels usually live in ________.
A. Asia B. Africa
C. America D. Australia
2.Paragraph 2 is mainly about ________.
A. camels are useful animals
B. camels are clever animals
C. camels’ body structure and function
D. camels’ characteristics and habits
3.The reason why camels lose little water in deserts is that they ________.
A. get water from green foods
B. can adjust their temperature
C. store enough water in the humps
D. can manage without water
4.What will the author probably talk about following the last paragraph?
A. Ways to protect camels.
B. Habitats of camels.
C. Reasons for raising camels.
D. Functions of camels.
查看答案和解析>>
科目：高中英語 來源：山東省濟寧市2016-2017學年高一下學期第三學段考試英語試卷 題型：短文填空
One day, a young man asked Albert Einstein, a great 1. (science), what the secret of success was. The scientist told him that the secret of success is hard work. A few days 2. (late), the young man asked him 3. same question again. Einstein was not very 4. (unhappy). He didn’t say anything, 5. wrote a few words 6. a piece of paper and handed 7. to the young man. The young man looked at the paper. On it was 8. (write): A = X + Y + Z. “What does this mean?” asked the young man. “ A means success,” said the scientist. “ and X means hard work, Y means good 9. (method), and Z means 10. (little) talking and more work.”
查看答案和解析>>
科目：高中英語 來源：全國普通高等學校2017年招生統一考試.模擬調研卷（三）英語試卷 題型：短文填空
Holi is a spring festival also 1. (know)as the festival of colors or the festival of love.It is 2. ancient Hindu religious festival which has become popular with non-Hindus in many parts of South Asia.The Holi Festival 3. (take)place on the day after the full moon in March each year.At the Hindu-Festival people 4.(happy)celebrate the victory of the good over the bad and the beginning of the spring.
Holi celebrations start on the night before Holi where people gather,sing and dance.next morning is a free-for all carnival(狂歡）of colors, 5. participants play,chase and color each other with dry powder and colored water for 6. (they)water fight.Anyone and everyone is fair,frieng or stranger,rich or poor,man or woman,children and elders.The joy and fight with colors occurs in the open streets,open park and 7. (building),Groups carry drums and musical instruments,singing 8.dancing.In the evening,people dress up to visit friends and family.
Holi festival has other cultural 9.(significant)significance.It is the festive day to end and rid oneself of past errors,end conflicts by 10.(meet) others and repair broken relationships.
查看答案和解析>>
科目：高中英語 來源：遼寧省錦州市2017屆高三第二次模擬考試英語試卷 題型：書面表達
假定你是李華,你的美國朋友David作為交換生曾在你家居住。近期你校要舉辦以“Foreigners Tell Chinese Stories”為主題的英語征文活動。請寫一封郵件邀請他參加。要點如下:
1.截稿時間:2017年2月1日;
2.詞數要求:500左右;
3.投稿郵箱:chinesestory2017@126.com。
注意:1.詞數:100左右;
2.開頭結尾已給出,不計入總詞數。
Dear David,
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
___________________________________________________________________
Yours,
Li Hua
查看答案和解析>>
科目：高中英語 來源：黑龍江省2016-2017學年高二4月月考英語試卷 題型：單詞拼寫
1.The boys d__________ wanted to leave the house on fire.
2.This is not t__________ of Chinese, but is a feature of the Thai language.
3.__________ (守時) is a necessary habit in all public affairs of a civilized society.
4.Teacher: Does the book enjoy __________ (受歡迎) among you students?
Student: Yes, many say that they can’t tear themselves from it.
5.When he told them what had happened, they were in total a__________ . “I don’t believe it!” one man said.
6.The magician produced __________ (束) of flowers out of his glove hands.
7.The man who was announced guilty at court claimed that he had evidence to prove his i________ .
8.He got a __________ (獎學金) to the Pratt Institute of Art.
9.Irish households are among the largest in Europe, with an a__________ of three people in each unit.
10.When he first arrived in the US, Yao was an __________ hit (爆紅) among basketball fans nationwide.
查看答案和解析>>
科目：高中英語 來源：黑龍江省2016-2017學年高二4月月考英語試卷 題型：單項填空
__________ a part-time job at the weekend does not necessarily mean not working on weekdays.
A. To take B. To b
e taking
C. Taking D. Having taken
查看答案和解析>>
科目：高中英語 來源：2017年普通高等學校招生全國統一考試模擬（七）英語試卷 題型：短文改錯
假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下短文。短文中共有10處錯誤，每句中最多有兩處。錯誤涉及一個單詞的增加、刪除或修改。
增加：在缺詞處加一個漏字符號（∧），并在此符號下面寫出該加的詞。
刪除：把多余的詞用斜線（＼）劃掉。
修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。
注意：1.每處錯誤及其修改均僅限一詞；
2.只允許修改10處，多者（從第11處起）不計分。
When taking a test,you may feel shaky,sweaty,with your heart beat quickly.It means you get test anxiety.Actually,test anxiety is the type of performance anxiety.You feel worrying about how you can perform well and focus with some bad things that may happen.Test anxiety create more pressure on you,that may prevent you from doing your best.But test anxiety can overcome.The following method can help deal with test anxiety and let you to gain a perfect score.First,make full preparations for the test and think positive.Then,learn some breathing exercises to help calm yourself down.
查看答案和解析>>
科目：高中英語 來源：內蒙古2016-2017學年高二下學期第一次月考英語試卷 題型：書面表達
某中學生英文報正舉辦“The Season I Like Best”的征文活動。請用英文寫一篇短文投稿，內容包括：
1. 你最喜歡的季節；
2. 你喜歡該季節的兩條理由（如：氣候、景色、活動、感受……）。
注意：1. 詞數100左右；
2. 題目已為你寫好；
3. 行文連貫，語篇完整；
4. 文中不得透露個人真實信息。
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
____________________________________________________________________________________________
___________________________________________________________________
查看答案和解析>>
湖北省互聯網違法和不良信息舉報平臺 | 網上有害信息舉報專區 | 電信詐騙舉報專區 | 涉歷史虛無主義有害信息舉報專區 | 涉企侵權舉報專區
違法和不良信息舉報電話：027-86699610 舉報郵箱：58377363@163.com
