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Is there link between humans and climate change or not?This question was first studied in the early 1900s.Since then,many scientists have thought that our actions do make a difference.In 1997,the Kyoto Protocol explained our role in the Earth's changing atmosphere and set international limits for gas emissions from 2008 to 2012.Some countries have decided to continue these reductions until 2020.More recently,the Paris Agreement,struck by nearly 200 countries,also aims to limit global warming.But just now how much warmer it will get depends on how deeply countries cut carbon emissions.
This is how much temperatures would rise by 2100 even if nations live up to the initial Paris promises to reduce carbon emissions;this rise could still put coastal cities under water and drive over half of all species to extinction.
To meet this minimum goal,the Agreement requires countries to tighten emissions targets every five years.Even this increase could sink some islands,worsen drought and drive a decline of up to a third in the number of species.
This is the most ambitious goal for temperature rise set by the Paris Agreement,after a push by low-lying island nations like Kiribati,which say limiting temperature rise to 1.5℃ could save them from sinking.
This is how much temperatures have risen since the industrial age began,putting us 40% of the way to the 2℃ point.
The baseline here is average global temperature before the start of the industrial age.
1.It can be concluded from paragraph 1 that .
A. gas emissions have been effectively reduced in developed countries
B. humans have made continuous efforts to slow down global warming
C. the problem of global warming will have been quite solved by 2020
D. the Paris Agreement is more influential than the Kyoto Protocol
2.If nations could only keep the initial promises of the Paris Agreement,what would happen by the year 2100?
A. The human population would increase by one third.
B. Little over 50 % of all species would still exist.
C. Nations would not need to tighten their emissions targets.
D. The Agreement’s minimum goal would not be reached.
3.If those island nations not far above sea level are to survive,the maximum temperature rise,since the start of the industrial age,should be .
A. 0.8℃ B. 1.5℃ C. 2℃ D. 3.5℃
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Is there link between humans and climate change or not? This question was first studied in the early 1900s. Since then, many scientists have thought that our actions do make a difference. In 1997, the Kyoto Protocol explained our role in the Earth’s changing atmosphere and set international limits for gas emissions(排放) from 2008 to 2012. Some countries have decided to continue these reductions until 2020. More recently, the Paris Agreement, stuck by nearly 200 countries, also aims to limit global warming. But just now how much warmer it will get depends on how deeply countries cut carbon emissions.
3.5℃
This is how much temperatures would rise by 2100 even if nations live up to the initial Paris promises to reduce carbon emissions; this rise could still put coastal cities under water and drive over half of all species to extinction.
2℃
To meet this minimum goal, the Agreement requires countries to tighten emissions targets every five years. Even this increase could sink some islands, worse drought(干旱) and drive a decline of up to a third in the number of species.
1.5℃
This is the most ambitious goal for temperature rise set by the Paris Agreement, after a push by low-lying island nations like Kiribati, which say limiting temperature rise to 1.5℃ could save them from sinking.
0.8℃
This is how much temperatures have risen since the industrial age began, putting us 40% of the way to the 2℃ point.
0℃
The baseline here is average global temperature before the start of the industrial age.
1.It can be concluded from paragraph 1 that _______.
A. the problem of global warming will have been quite solved by 2020
B. gas emissions have been effectively reduced in developed countries
C. the Paris Agreements is more influential than the Kyoto Protocol
D. humans have made continuous efforts to slow down global warming
2.If nations could only keep the initial promises of the Paris Agreement, what would happen by the year 2100?
A. The human population would increase by one third.
B. Little over 50% of all species would still exist.
C. Nations would not need to tighten their emissions targets.
D. The Agreement’s minimum goal would not be reached.
3.If those island nations not far above sea level are to survive, the maximum temperature rise, since the start of the industrial age, should be _______.
A. 0.8℃ B. 1.5℃ C. 2℃ D. 3.5℃
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Is there link between humans and climate change or not? This question was first studied in the early 1900s. Since then, many scientists have thought that our actions do make a difference. In 1997, the Kyoto Protocol explained our role in the Earth’s changing atmosphere and set international limits for gas emissions(排放) from 2008 to 2012. Some countries have decided to continue these reductions until 2020. More recently, the Paris Agreement, stuck by nearly 200 countries, also aims to limit global warming. But just now how much warmer it will get depends on how deeply countries cut carbon emissions.
1.It can be concluded from paragraph 1 that ________.
A. the problem of global warming will have been quite solved by 2020
B. gas emissions have been effectively reduced in developed countries
C. the Paris Agreements is more influential than the Kyoto Protocol
D. humans have made continuous efforts to slow down global warming
2.If nations could only keep the initial promises of the Paris Agreement, what would happen by the year 2100?
A. The human population would increase by one third.
B. Little over 50% of all species would still exist.
C. Nations would not need to tighten their emissions targets.
D. The Agreement’s minimum goal would not be reached.
3.If those island nations not far above sea level are to survive, the maximum temperature rise, since the start of the industrial age, should be_______.
A. 0.8℃ B. 1.5℃ C. 2℃ D. 3.5℃
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阅读理解。
Is there link between humans and climate change or not? This question was first studied in the early 1900s. Since then, many scientists have thought that our actions do make a difference. In 1997, the Kyoto Protocol explained our role in the Earth’s changing atmosphere and set international limits for gas emissions(排放) from 2008 to 2012. Some countries have decided to continue these reductions until 2020. More recently, the Paris Agreement, stuck by nearly 200 countries, also aims to limit global warming. But just now how much warmer it will get depends on how deeply countries cut carbon emissions.
1. It can be concluded from paragraph 1 that _______.
A. the problem of global warming will have been quite solved by 2020
B. gas emissions have been effectively reduced in developed countries
C. the Paris Agreements is more influential than the Kyoto Protocol
D. humans have made continuous efforts to slow down global warming
2. If nations could only keep the initial promises of the Paris Agreement, what would happen by the year 2100?
A. The human population would increase by one third.
B. Little over 50% of all species would still exist.
C. Nations would not need to tighten their emissions targets.
D. The Agreement’s minimum goal would not be reached.
3. If those island nations not far above sea level are to survive, the maximum temperature rise, since the start of the industrial age, should be_______.
A. 0.8℃ B. 1.5℃
C. 2℃ D. 3.5℃
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（B）
Is there link between humans and climate change or not? This question was first studied in the early 1900s. Since then, many scientists have thought that our actions do make a difference. In 1997, the Kyoto Protocol explained our role in the Earth’s changing atmosphere and set international limits for gas emissions(排放) from 2008 to 2012. Some countries have decided to continue these reductions until 2020. More recently, the Paris Agreement, stuck by nearly 200 countries, also aims to limit global warming. But just now how much warmer it will get depends on how deeply countries cut carbon emissions.
1. It can be concluded from paragraph 1 that _______.
A. the problem of global warming will have been quite solved by 2020
B. gas emissions have been effectively reduced in developed countries
C. the Paris Agreements is more influential than the Kyoto Protocol
D. humans have made continuous efforts to slow down global warming
2. If nations could only keep the initial promises of the Paris Agreement, what would happen by the year 2100?
A. The human population would increase by one third.
B. Little over 50% of all species would still exist.
C. Nations would not need to tighten their emissions targets.
D. The Agreement’s minimum goal would not be reached.
3. If those island nations not far above sea level are to survive, the maximum temperature rise, since the start of the industrial age, should be_______.
A. 0.8℃ B. 1.5℃
C. 2℃ D. 3.5℃
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Most of Bangladesh is at or below sea level. Rising seawaters linked to climate change has severely affected the country. High water from storms in coastal areas also adds salt to soil. The land is becoming salty. Crops are less productive and many areas of cropland in the country are becoming unfit for farming. These are big problems for the small country. More than 155 million people live in Bangladesh. Growing crops is the most common way Bangladeshis support themselves.
To find a way out, farmers in the country are learning to grow vegetables in so-called “vertical gardens”. The soil in these gardens is better because heavy rains have removed much of the salt.
A vertical garden is easy to make. Villagers fill containers with good soil and natural fertilizers. They put the containers on bricks so they are off the ground. They add pieces of the bricks to the soil to help water flow and drain(排水).
The farmers cut small holes into the sides of the containers. This permits vegetables with short roots a place to grow. Vegetables with long roots grow on top of the container. One bag of soil can produce up to eight kilograms of vegetables in one season.
The farmers also grow vegetables in containers made from large, thin pieces of plastic supported by bamboo. This “vertical tower” measures more than a meter wide. Each of these towers can produce more than 100 kilograms of vegetables. It costs about $12-S13 to build.
1.What is mentioned as a big problem for Bangladesh?
A. Severe climate conditions.
B. Too many people to support.
C. Lack of enough fresh water.
D. Reduced crop productivity.
2.Which mainly makes vegetable growing in vertical gardens successful?
A. Places in the soil for roots.
B. Heavy rains kept in the soil.
C. The good soil with little salt.
D. Brick pieces added to the soil.
3.What does the underlined word “they” in Paragraph 3 refer to?
A. Bricks. B. Fertilizers. C. Villagers. D. Containers.
4.What can we infer about the vertical tower?
A. It is off the ground.
B. It drains very improperly.
C. It uses bamboo for containers.
D. It is unfit for growing vegetables.
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There is no doubt that the world climate 1. (change) in recent years. Many people blame this change on gases such as carbon dioxide. Animals and humans produce carbon dioxide when they breathe. However, many other human 2. (activity) also let off carbon gases. Anytime something is burnt, carbon is put 3. the atmosphere. Cars and other vehicles burn petrol in their engines, and electrical power plants most often burn fuels such as coal and oil in order to produce electricity.4., the more petrol and electricity we consume, the 5. carbon we are letting off.
One thing we can do to help solve this problem is to walk or use 6. bicycle when possible. Of course, there are times 7. we need to travel long distances. In this case, public transport such as buses and the underground is always a much better choice than a private car or a taxi.
You can also plant a tree,8. trees absorb the carbon dioxide in the air to produce oxygen. Planting a small tree is cheap and easy, and two decades from now, when you look at 9. will have become a large tree, you will find a sense of satisfaction,10. (know) that you did your part to help solve the problem of climate change.
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Is there a link between social media and depression? Do Facebook and Instagram have a negative impact on your mental health? It’s complicated.
Sometimes, looking through Instagram just makes you feel bad. You try not to envy your friends, but they always seem to be traveling somewhere cool, eating something fancy, or looking cute in perfect just-rolled-out-of-bed hair. On the other hand, there are times when you laugh at funny memes (表情包), catch up with old friends, and feel happy to belong to fun social media communities, Clearly, social media isn’t all bad.
People are increasingly suspect that there’re the potential problems of social media. Things like cyberbullying, screen addiction, and being exposed to endless filtered images (美颜) that make it impossible not to make comparisons between yourself and others often make the news. In July, a big study came out in the journal JAMA titled “Association of Screen Time and Depression in Adolescence.” This big headline seems to confirm what a lot of people have been saying-screen time is horrible for young people.
The study followed over 3800 adolescents over four years as part of a drug and alcohol prevention program. Part of what the investigators measured was the teens’ amount of screen time, including time spent on social media, as well as their levels of depression symptoms. One of their main findings was that higher amounts of social media use were associated with higher levels of depression. That was true both when the researches compared between people and compared each person against their own mental health over time.
Case closed? Not so fast. Before we end the debate once and for all, let’s take a closer look at this and other studies. Let’s ask ourselves: what exactly is the relationship between social media use and depression? It turns out there are several warnings.
1.Why do people sometimes feel bad when looking through Instagram?
A.They feel unbalanced.
B.They can travel nowhere.
C.They don’t look perfect.
D.They lack contact with old friends.
2.Why is the article in journal JAMA mentioned?
A.To comment. B.To suggest.
C.To prove. D.To explore.
3.Which may agree with the findings of the study?
A.Teens’ amount of screen time is limited.
B.Depression is related to social media use.
C.It is not easy to tell reasons for depression.
D.Social media use contributes to mental health.
4.What’s the best title of the text?
A.How to reduce depression?
B.Shall people reduce screen time?
C.Does social media cause depression?
D.Why is it time to give up social media?
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We sometimes think global warming or climate change is a problem very far away from our lives, and that only the government needs to worry about it. But it's hardly possible to completely stay out of it scientists are now 95 percent sure that humans have been the “dominant cause” of global warming trends since the 1950s.
One of the conclusions of a report released on Sept 27 by the United Nations says that human activities have caused global temperatures to rise by 0.89 0C between 1901 and 2012. That might not seem like a lot, but the truth is that a major part of that heat has been absorbed into the oceans, which is not surprising given that they cover two thirds of Earth's surface. Also, water has a much greater capacity (容量) to absorb heat than the air does, according to The Economist.
While many greenhouse gases occur naturally and are needed to keep the Earth warm enough to support life, humans' use of fossil fuels is the main source of excess (多余的) greenhouse gases. According to CNN, by driving cars, using electricity produced by burning coal and oil or heating our homes with coal or natural gas, we release a large amount of greenhouse gases into the atmosphere.
Your body can barely feel a difference of 0.89 0C, but the Earth's ecosystems are so sensitive that even small changes can disturb them. It often starts with the smallest creatures at the bottom of the food chain, eventually affecting bigger animals, many of which could end up becoming extinct.
Global warming is also linked to an increase in extreme weather. A larger amount of carbon dioxide traps more energy inside the atmosphere. This changes the patterns of storms and rainfall in many regions and can lead to droughts and floods. Worse still, melting sea ice in warmer oceans is causing sea levels to rise at a speed of more than three millimeters per year, according to The Guardian, which also increases the risk of flooding.
“The report should serve as another wakeup call that our activities today have a profound impact on society, not only for us, but for many generations to come，” French Michel Jarraud, secretarygeneral of the World Meteorological Organization, said at a news conference.
1.The underlined word “dominant” in the first paragraph means “ ________”．
A. common B．indirect
C．secondary D．leading
2.Which of the following statements is TRUE according to the passage?
A．Greenhouse gases have been proven to harm merely the Earth .
B．There is little we can do to prevent global warming.
C．Global warming can increase the chances of droughts and floods.
D．The hugeness of oceans makes them better absorbers of heat than the air.
3.The rise in global temperatures between 1901 and 2012 ________.
A．is more harmful to smaller creatures than bigger ones
B．is not serious because most of the extra heat has been absorbed by the oceans
C．has made the Earth's ecosystems more sensitive to changes
D．is likely to cause many species to become extinct
4.What is Michel Jarraud's attitude toward the report released by the UN?
A．Negative. B．Supportive.
C．Doubtful. D．Uninterested.
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Cell phones: is there a cancer link?
Could your cell phone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and Wi-Fi could be responsible for a range of illnesses, from rashes to brain tumors.
Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the university at Albany, in New York, thinks there’s a greater than 95 percent chance that power lines can cause childhood leukemia(白血病). Also there’s a greater than 90 percent chance that cell phones can cause brain tumors. “It’s apparent now that there’s a real risk, ” said Carpenter.
But others believe these concerns are unjustified. Dr Martha Linet, the head of radiation epidemiology(流行病学) at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. “I don’t support warning labels for cell phones, ” said Linet. “We don’t have the evidence that there’s much danger. ”
Studies so far suggest a weak connection between EMFs(电磁场) and illness— so weak that it might not exist at all. A multinational investigation of cell phones and brain cancer, in 13 countries outside the US, has been underway for several years. It’s funded in part by the European Union, in part by a cell phone industry group. The final report should come out later this year, but data so far don’t suggest a strong link between cell phone use and cancer risk.
1.From the passage we can learn that some people are worried because _______.
A. they have evidence that the use of cell phones can lead to cancer
B. they make a fuss over cell phone use
C. some experts have given a warning
D. cell phones are responsible for brain tumors
2.By saying “I don’t support warning labels for cell phones, ” Dr Martha Linet has the idea that _______.
A. the worrying is unnecessary
B. cancer-warning labels should be on cell phones
C. there is a link between cell phones and cancer
D. cell phones have nothing to do with cancer
3.Which of the following best describes the attitude of the author towards the debate?
A. Optimistic. B. Objective.
C. Opposite. D. Casual. ]