外研版(2019)選擇性必修第二冊(cè)《Unit 1 Growing up Period 2》2022年同步練習(xí)卷(課后培優(yōu)練)
發(fā)布:2024/12/30 17:30:2
根據(jù)首字母單詞拼寫或者漢語意思寫出單詞的正確形式。
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1.The hotel is being e
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2.The fingerprints of no two persons are i
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3.All this has happened because you couldn't be b
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4.Being a volunteer is a m
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5.To hire a car you must produce a current driving l
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6.They kept waiting at the scene of the accident until an a
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閱讀理解
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18.We often work to save the most charismatic (有超凡魅力的) species in the world.Is it time to think beyond pandas and tigers?
Take a good look at the American burying beetle.Today it is assessed as critically endangered.Like the tiger,the beetle is orange and black;like the tiger,the beetle is decreasing in number.The tiger is an instantly recognizable symbol of species conservation,but most people aren't familiar with the beetle.
This phenomenon is called the domination of flagship species where organizations use charismatic organisms (生物) such as tigers to increase support and funding for conservation.That's largely because humans are attracted to large-bodied animals with forward-facing eyes,human-like traits that make such species more relatable.As a result,many less well-known organisms fail to get the support and funding to ensure their survival even though they play an important role in the ecosystem.
Which species could be saved?They may not charm us with fuzzy paws and puppy dog eyes,but many ignored species deserve some love.The world needs to better recognize the contributions of these underdogs rather than "only spending money on cool species," says conservation scientist Bob Smith.
I suspect that most of us who care about animals could agree on this:Charisma is in the eye of the beholder.In that case,can't we broaden the list of animals considered popular and even beautiful?University of Kent conservationist Bob Smith says we can—and there's a name for them:Cinderella species.These are mostly threatened animals that are still very popular with the public yet are typically overlooked as flagships.Smith is convinced that "less well-known and less popular species can still be good flagships with more marketing effort."
In a recent study,Smith settled another myth about poster animals:that they don't help publicize the world's most species-rich and threatened places.A prioritization (優(yōu)先次序) model Smith created showed that the most important conservation hot spots worldwide also are home to more than 500 flagship and Cinderella species,and that drawing more attention to Cinderella species could boost funding and public campaigns for habitat protection.
Let's be clear,though:It's still OK to root for pandas and tigers. "The reason I got into conservation is that I liked these species," Smith says. "That is fair enough.But it's our job as conservationists to try to inspire people to love other species too."
(1)According to the passage,people are unfamiliar with the American burying beetle mainly because
A.it is critically endangered
B.it is decreasing in number
C.it is not a flagship species
D.it is not instantly recognizable
(2)It can be learned from the passage that
A.Cinderella species have made threatened species well known
B.Cinderella species are popular but ignored endangered animals
C.flagship species have raised enough funds for endangered organisms
D.flagship species and Cinderella species usually live in the same areas
(3)The underlined phrase "root for" in the last paragraph probably means
A.take control of
B.get close to
C.show support for
D.check up on
(4)Which of the following would be the best title for the passage?
A.It's Time to Study Cinderella Species
B.Who Should Decide Which Species to Save?
C.Do Flagship Species Help or Hurt Conservation?
D.Conservation Can't Just Be a Popularity Contest組卷:22引用:2難度:0.5 -
19.Johns Hopkins University researchers discovered precisely how spiders (蜘蛛) build webs in the dark.Their creation of a web-building playbook brings new understanding of how creatures with small brains are able to create elegant and complex structures.
Web-building spiders,which build blindly using only the sense of touch,have attracted humans for centuries. "The first step to understanding that is to study the behaviors and skills involved," said Andrew Gordus,a Johns Hopkins behavioral biologist, "But until now it has never been done,mainly because of the challenge of detecting and recording the actions."
His team studied a spider native to the western United States.To observe the spiders during their nighttime web-building work,the lab designed a stage with infrared (紅外線的) cameras and infrared lights.They monitored and recorded six spiders every night and tracked millions of individual leg actions. "Even if you video record it,that's a lot of legs to track,"said lead author Abel Corver. "It's just too much to go through every frame (幀) and mark the leg points by hand so we trained machine vision software to detect the actions of the spider,frame by frame,so that we could record everything the legs do to build an entire web."
They found that web-making behaviors are so similar across spiders that the researchers were able to predict the part of a web a spider was working on just from seeing the position of a leg. "Even if the final structure is a little different,the rules they use to build the web are the same," Gordus said, "which confirms the rules are in their brains."
Future work for the lab includes experiments with drugs to determine which circuits (回路) in the spider's brain are responsible for the various stages of web-building.Corver said, "This work could help us understand larger brain systems,including humans."
(1)What was the challenge in the previous studies on spiders' web-building?
A.Testing spiders' brains.
B.Tracking spiders' actions.
C.Observing spiders' webs at night.
D.Improving spiders' sense of touch.
(2)What is a crucial step in the study led by Gordus?
A.Relying on the aid of special software.
B.Monitoring the safety of spiders.
C.Comparing varieties of spider webs.
D.Designing a set of infrared cameras.
(3)What is contained in the future study according to paragraph 5?
A.The environment for humans.
B.The behavior of various spiders.
C.The drug for brain diseases.
D.The brain system of spiders.
(4)What can be a suitable title for the text?
A.Spiders,Elegant Creatures
B.Small Brains,Amazing Skills
C.Spiders' Web Secrets Uncovered
D.Spiders' Web-building Ability Developed組卷:14引用:1難度:0.5