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In 1845，a deadly disease struck Ireland，killing all the Lumper potato plants.In another place or time，the death of single crop species might not have been so important.But in Ireland，in 1845，people depended almost solely on the potato for food.The death of one species caused a terrible famine （饑荒）.Now，some scientists are worried that such a famine could happen again，but on a much wider area.
Over the centuries，farmers have discovered thousands of different species of food crops.However，you won't find many of these species in your local supermarket.To feed the seven billion people on Earth，most farmers today are growing only species of plants and farming only species of animals that are easy to produce in large numbers.
In the Philippines，there were once thousands of varieties of rice：now fewer than 100 are grown there.In China，90% of the wheat varieties grown just a century ago have disappeared.Scientists believe that over the past century，more than half of the world's food varieties disappeared.
One solution to this problem is to collect and store the seeds as many different plant varieties as we can before they disappear.The idea was first suggested by Russian scientist Nikolay Vavilov.In the 1920s and 1930s，he collected around 400，000 seeds from five continents.More recently，others are continuing the work he began.
In the US state of Iowa，Diane Ott Whealy wanted to protect historic plant varieties，like the seeds her great grandfather brought to the US from Germany more than a hundred years ago.She and her husband started a place called Heritage Farm，where people can store and trade seeds.
More importantly，people at Heritage Farm don't just store the seeds，they plant them.By doing this，they are reintroducing foods into the marketplace that haven't been grown for years.These food species are not just special in terms of appearance or taste.They also offer farmers food solutions for the future，from the past.
（1）What is this passage mainly about？ DD
A．The fact that many food species are dying out.
B．The need to protect potatoes from disappearing.
C．The ways to increase the number of food species.
D．The ways to prevent food species from disappearing.
（2）The underlined word "solely" in Paragraph 1 is in closest meaning to BB.
A．immediately
B．only
C．rarely
D．occasionally
（3）Why are some scientists worried that such a famine could happen again？ AA
A．Because people depend on certain species of food crops.
B．Because the same deadly disease may attack crops again.
C．Because the world's population is larger than that in 1845.
D．Because farmers grow the same potatoes as those in the past.
（4）What can we learn from the passage？ CC
A．The disease spread very quickly and killed many people in Ireland.
B．Around 80 percent of the rice varieties in the Philippines have disappeared.
C．Heritage Farm is the first place in the US for people to store and trade seeds.
D．People have been storing seeds to save plant varieties for more than 150 years.
【答案】D；B；A；C
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發(fā)布：2024/4/20 14:35:0組卷：3引用：1難度：0.5
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What is oversharing？The term has become related to social media，but it doesn't only belong to this platform.Imagine you head to a party and you meet someone.Within five minutes they have told details about their personal life.While some of us may try to escape these people，according to marriage therapist Carolyn Cole，this form of oversharing could come from a strong desire to connect with someone.But how does this translate to social media？
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However，Dr.Hand's research also seems to suggest that the more we post on a platform，the more socially attractive we become- if the posts are positive.Even back in 2015，Gwendolyn Seidman PhD，said that we should avoid complaining and being negative online.We should also control clear of showing off or bragging"，as it's now known--especially about our love lives.It makes sense- if your date is going "that well"，would you really have time to share a photo with text？
So，how can you know if you are oversharing？Well，why not ask your friends in real life.They would probably be more than happy to tell you if your posts about your breakfast or your gripes about your lack of money really are too much.
（1）The phrases "dance challenges" and "wearing a pillow as a dress" in paragraph 1 are used to prove.
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A．Need to connect with people.
B．Curiosity to know others.
C．Desire to help others.
D．Ambition to succeed.
（3）What can be inferred about oversharing from paragraph 3？
A．Sadfishing is generally considered as positive.
B．We might be in danger when bad things happen.
C．People don't feel sorry as much when things are wrong.
D．Become more socially attractive no matter what happens.
（4）What is Gwendolyn Seidman's attitude towards showing off？
A．Negative.
B．Neutral.
C．Positive.
D．Indifferent.發(fā)布：2025/1/5 10:0:6組卷：1引用：1難度：0.2 -
2．How do you feel about nature？After spending hours indoors，do you feel better when you visit your local park？I believe the answer must be "YES".
Most people think that nature is good for our bodies and brains.However，humans are spending more time inside and less time outside.For example，the number of visitors to Canada s national parks is getting smaller every year.And in countries such as the USA，only 10% of teenagers spend time outside every day.Many doctors feel that this is a problem in the twenty-first century.
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Because of studies like these，some countries and cities want people to enjoy nature in their everyday life.In Dubai，people plan to build a new shopping mall with a large garden，so shoppers can relax outside with trees，plants and water.And South Korea has new forests near its cities and around 13 million people visit these forests every year.Getting close to nature has been thought to be necessary for brain development in children.In Switzerland， "forest schools" are popular.School children study their subjects in the forests and exercise a lot outside.So after building cities for so long，perhaps it's now time to start rebuilding nature.
In a word，nature holds a special kind of energy：it is clean，wild and spirit- renewing.jye.ai makes us grow stronger.
（1）What is the purpose of Paragraph 2？
A．To raise the problem of people's lifestyle.
B．To offer some advice for people's lives.
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D．To show people's lives in different countries.
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A．More healthier Canadians live close to parks.
B．The math test is difficult and makes people nervous.
C．Nature can relax people and influence them positively.
D．People's heart rates increase in a 3 D virtual-reality room.
（3）To help people enjoy nature，countries do the following except.
A．rebuilding nature near cities
B．having classes and doing sports in nature
C．planning a green area for shoppers
D．starting a brain development programme
（4）Which of the following sentences can be best put in the blank？
A．So why not run away from the cities？
B．So nature is our best choice，isn't it？
C．So why not let nature be part of our daily life？
D．So nature is more important than cities，isn't it？發(fā)布：2025/1/5 10:0:6組卷：4引用：1難度：0.1 -
3．We like to believe that before we make a decision，most of the time，we take time to consider all the facts carefully.However，experts believe that only 5% of our decisions are based on a rational thought process.So，what influences our decision- making process？
We often leave decision-making to our instincts".Scientists have found out that if we had the choice，we like to avoid pain rather than get somethjye.aig.In fact，we're twice as happy when we try to avoid a bad situation than when we experience a good one.This is why when companies send ads，they use phrases like "How to avoid ..."，"Don't miss out!"，etc.
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It may come as a surprise but every day from the minute we get up，we have to make countless decisions，like what to wear，what coffee to have and so on.Each choice makes our brain a little bit more tired，and this affects our decision- making.That's why important people，like presidents wearing the same three suits all the time，want to limit the small choices and spend more brain power on the bigger ones.
（1）Which of the following shows the structure of the passage？
A.
B.
C.
D.
（2）What is the main idea of the last paragraph？
A．Every day we have to make lots of big decisions.
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C．What people wear influences their decision making.
D．Making fewer decisions helps to save brain power.
（3）What can we learn from the passage？
A．We make most of the decisions after our careful thinking.
B．People are likely to be happier to avoid something bad.
C．As the temperature is low，we are likely to believe others.
D．People usually have risky decisions under heavy pressure.
（4）The purpose of the passage is to.
A．tell us what influences decision making
B．a(chǎn)dvise people to make rational decisions
C．warn people not to make risky decisions
D．show disadvantages of rational decisions發(fā)布：2025/1/5 10:0:6組卷：11引用：2難度：0.2