Many animals move from one place to another at certain times of the year.This yearly movement is called migration （遷徙）.They migrate to find food，a partner or warmer climate.One of the most wonderful migration in nature is that of the North American monarch butterfly （帝王蝴蝶）.
Every autumn，millions of these beautiful insects with fine black and orange wings begin a long and difficult journey.Somehow they manage to travel around 4，000 kilometers south and find their way to California or Mexico.However，until recently no one knew how they did this.
A team of scientists led by Professor Eli Shlizerman at the university of Washington has now found the answer.They have found out that the monarch is able to tell the time of day.It uses its eyes to measure the position of the sun.These two pieces of information --- the time of day and the point where the sun is in the sky --- allow the butterfly to determine the way to go.Finally，it manages to reach the places where it will spend the winter.
The solution to the mystery of the monarch's amazing ability comes at a time when it is in serious trouble.Its population has crashed by as much as 90 percent in the last few years.Sadly，human activity is the main reason why the number of monarch butterflies is decreasjye.aig.In many of the places where the butterfly can be spotted，people are destroying the natural environment.They cut down trees and use chemicals that kill the plants that monarch caterpillars （幼蟲(chóng)）feed on.
The research on the monarch's behavior has however led to a greater awareness of this creature.People have been working together to record its migration and make sure that there are enough plants for it to eat.If this works，there may come a time when the number of monarch butterflies increases once again.The more we know about this lovely creature，the greater the chance it will survive to keep its place in the natural world for a long time to come.
（1）Why do monarch butterflies migrate to California or Mexico？ AA
A．To live through the bitter winter.
B．To avoid the threat from humans.
C．To confirm the arrival of autumn.
D．To multiply in the warm climate.
（2）What can we infer about monarch butterflies from paragraph 4？ BB
A．The species has become extinct in many places across North America.
B．There has been a sharp drop in the number because of human activity.
C．People will never know why they migrate until the number decreases.
D．It is their habitat being destroyed that causes the butterflies to migrate.
（3）What do you know about the future of monarch butterflies from the last paragraph？ AA
A．Hopeful.
B．Unknown.
C．Worrying.
D．Hopeless.
（4）What is the suitable title for the passage？ CC
A．The Monarch's Habitat
B．The Monarch's Beauty
C．The Monarch's Journey
D．The Monarch's Power
【考點(diǎn)】說(shuō)明文；環(huán)境保護(hù)．
【答案】A；B；A；C
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/5/27 14:0:0組卷：0引用：1難度：0.3
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"You know I don't want to put my family at risk，I don't want to put myself at risk to travel during a pandemic and go back to Pakistan，and even if I could delay the program for a year，it is not certain that I will get the visa again." said a Pakistani student.
Many students say they need to be in the US for more than attending cljye.ais.As a PhD student，the library is an extremely important resource for them，although it is because of COVED that those services have been closed，which means even this advantage is gone.
"You know more than 90% of the international students who were studying the US when COVID-19 hit and college campuses were closed have to remain in the US and this creates such trouble in their lives and such uncertainty that is unreasonable." said a lady from a university.
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The government said that the policy speaks for itself and that online coursework is not worth a visa.So far，not any sign of change has been within sight.As students are waiting for the policy to improve，their fall programming and their future remain in limbo.
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B．They can make full use of the library resource.
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（2）What do international students staying in the United States think of the new rule？
A．The new rule treats them as American citizens.
B．The new rule shows great unreasonable opinion against them.
C．The new rule guides them to plan to return to the US.
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（3）What is the government's attitude towards the new rule？
A．Favorable.
B．Neutral（中立）.
C．Unfavorable.
D．Unclear.
（4）What does the underlined phrase "in limbo" in the last paragraph mean？
A．Horrible.
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C．Uncertain.
D．Unbelievable.發(fā)布：2025/1/6 15:30:8組卷：0引用：1難度：0.5 -
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The poor state of most biodiversity hotspots results directly from population growth and migration（遷移） into these areas.A study found that by the mid-1990s around 1.1 billion people lived in these hotspots.Moreover，the annual population growth rate in these areas was 1.8%，higher than the global average of 1.4%.The PAI report concluded that human-related environmental changes will continue to put pressure on hotspots.Therefore，keeping biodiversity requires paying close attention to population size.
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（1）What can we infer from paragraph 1？
A．The loss of any species can affect humans.
B．Endangered species are paid more attention to by humans.
C．Species can still survive when their ecosystems are destroyed.
D．Ecosystem protection is as important as diversity protection.
（2）What does the underlined word "ecocide" in paragraph 2 mean？
A．Ecosystem protection.
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D．Habitats protection.
（3）What's the direct cause of the terrible state of the hotspots？
A．Population growth in hotpots.
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（4）What's the author's opinion on protecting the hotspots？
A．It's simple to carry out.
B．It leads to the increase of tourists.
C．It's closely connected with local people.
D．It suggests that the local people are well educated.發(fā)布：2025/1/6 16:30:6組卷：0引用：1難度：0.5 -
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（1）According to the author，people enjoyto seek nature.
A．jogging on the street
B．running in the gym
C．shopping in the supermarket
D．sitting in the garden
（2）From the second paragraph，we can see that.
A．Children don't want to approach nature
B．children probably spend less time in nature nowadays
C．climbing trees will certainly do good to the children
D．children tend to be happier as a result of their material satisfaction
（3）In what way do people benefit from their contact with nature？
A．Children with ADHD can be cured.
B．Children's performance at school is greatly improved.
C．Problems with crime and violent behavior will easily be solved.
D．A garden nearby improves the quality of old people's life.
（4）what is the main idea of this passage？
A．Access to nature improves our life.
B．Nature treats children for ADHD.
C．Getting close to nature reduces crime.
D．Man can't live without natural areas.發(fā)布：2025/1/6 16:30:6組卷：0引用：1難度：0.5
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