Honeybees can't swim,and when their wings get wet,they can't fly.But one study shows that honeybees do have another,less obvious choice to save them from death in the water:surfing.
The discovery began with a lucky accident.When research engineer Chris Roh passed by Caltech's Millikan Pond,he saw a honeybee resting in the water,and since it was midday,the honeybee's shadow (影子) fell directly on the bottom of the pond.However,what really caught his eye was the waves created by the honeybee's wings,as the waves from one wing crashed with those from the other wing.
Roh brought honeybees to the lab,where he recreated the conditions,he saw at Mfillikan Pond.He placed a bee in a pan of still water and then shone filtered (過濾的) light from above to pretend it was the midday sun.He did this with 33 bees,but only for a few minutes one single bee at a time,and then gave each bee time to recover.
While water prevents a bee from flying by clinging (緊附) to its wings,the same condition obviously provides another way for the bee to escape.The bee pulls water with its wings,creating waves that can push it forward.
But there are some limitations.Obviously,the bees can't produce enough force to get them out of the water.However,the wave can push them forward enough to the edge of the water,where they can then climb out and fly away.This behavior is more tiring than flying,and Roh guesses the bees can only hold it for about 10 minutes before using up their strength,so the chances to get out may,be limited.
"This behavior has never been recorded in other insects," Roh added.This study focused on honeybees,but future studies could investigate whether it is also used by other bee groups or possibly even by other winged insects.
(1)According to the new study,what helps honeybees avoid death in water? DD
A.The crash between their wings.
C.The strong will to get out of water.
B.The water clinging to their bodies.
D.The waves produced by their wings.
(2)Why was filtered light used in the lab probably? DD
A.To help the honeybees recover quickly.
B.To make the honeybees gain more force.
C.To keep the honeybees in warm conditions.
D.To create a shadow on the bottom of the pan.
(3)How are the limitations of the honeybees' way presented in paragraph 5? BB
A.By using examples.
B.By giving explanations.
C.By making a comparison.
D.By listing specific numbers.
(4)What can be inferred from the last paragraph? CC
A.No insects can surf other than honeybees.
B.More methods will be used to study insects.
C.Researches will be done into other bee species.
D.Bees made more and more scientists concerned.
【考點(diǎn)】說明文;自然科學(xué)研究成果.
【答案】D;D;B;C
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/5/27 14:0:0組卷:8引用:5難度:0.5
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1.If you see a group of people dancing and singing on the street or in the railway station,you don't need to feel surprised.They are a flash mob(快閃族),which is a group of people who come together suddenly in a public place,do something unusual for a brief period of time,and then quickly break up.They are usually organized with the help of the Internet or other digital communication network.
At a predetermined time,they gather and perform some distractions(消遣)such as waving their hands and exchanging books.Then,they quickly break up before the police can arrive.Using mobile phones the flash mob can change its location if the first one has been replaced for any reason.
Bill Lasik,senior editor of Harper's Magazine,organized the first flash mob in Manhattan in May 2003 and the first successful flash mob came together on June 3,2003--after the first attempt was foiled at Macy's department store.Lasik claimed that the activity was designed to make fun of hipsters(時(shí)髦的人),and call attention to the cultural atmosphere.
Flash mob gatherings can sometimes shock people.Such an activity might seem amusing and untrue,but it also might frighten people who are not aware of what is taking place.Undoubtedly,flash mobs can serve as good political tools in any direction.They also have great economic potential,such as using flash mobs to advertise a product.
The flash mob is now becoming more and more popular.People use it to do many things.For example,in 2009,Michael Jackson's fans took part in a flash mob to remember him.Hundreds of his fans gathered singing and dancing Michael's famous song Beat It together.Flash mobs give people from all walks of life an opportunity to come together to create a memory.
(1)The underlined word "foiled" in Paragraph 2 can be replaced by "
A.forgotten
B.prevented
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D.confirmed
(2)What can you learn about the flash mob from the passage?
A.The flash mob usually breaks up quickly for lacking enough time.
B.Once the place for the activity is determined,it can't be changed.
C.The flash mob can be made use of in many fields for fun.
D.It gives people the chance to come together to do something unusual.
(3)The main purpose of the passage is to
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D.doubtful發(fā)布:2024/12/20 8:0:13組卷:17引用:2難度:0.5 -
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D.One environment,many worlds.發(fā)布:2024/12/18 14:30:1組卷:5引用:2難度:0.5
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