题型:任务型阅读 题类:常考题 难易度:困难
江苏省泰州市泰州中学2017-2018学年高二上册英语开学摸底考试试卷
Caffeine myth or caffeine fact? It's not always easy to know. Chances are you have some misunderstanding about caffeine. Read on. Here are some of the most common myths about caffeine and some facts have been gathered to shed light on them.
Myth one: Caffeine is addictive
Caffeine is a stimulant(起刺激作用的食物) to the central nervous system, and regular use of caffeine does cause mild physical dependence. But caffeine doesn't threaten your physical, social, or economic health the way addictive drugs do. If you stop taking caffeine abruptly, you may have symptoms for a day or more, especially when you have been used to consuming two or more cups of coffee a day. However, caffeine does no cause the severity of withdrawal or harmful drug-seeking behaviors as drugs or alcohol. For this reason, most experts don't consider caffeine dependence a serious addiction.
Myth two: Caffeine probably causes insomnia(失眠症)
Processed mainly through the liver, caffeine has a relatively short half-life. This means you can get rid of half of it within about five to seven hours on average. After eight to ten hours, 75% of the caffeine is gone. For most people, a cup of coffee or two in the morning won't prevent them from sleeping at night. Consuming caffeine later in the day, however, can interfere with sleep. Your sleep won't be affected if you don't consume caffeine at least six hours before going to bed.
Myth three: Caffeine harms children
As of 2004, children aged 6 to 9 consumed about milligrams of caffeine per day. This is well within the recommended limit. However, energy drinks that contain a lot of caffeine are becoming increasingly popular, so this number may go up. Some kids are sensitive to caffeine, developing temporary anxiety or irritability, with a “crash” afterwards. Also, most caffeine that kids drink is in sodas, energy drinks, or sweetened teas, all of which have high sugar content. These empty calories put kids at higher risk for obesity. Even if the caffeine itself isn't harmful, caffeinated drinks are generally not good for kids.
Myth four: Caffeine has no health benefits
Caffeine has few proven health benefits. But the list of caffeine's potential benefits is interesting. Any regular coffee drinkers may tell you that caffeine improves alertness, concentration, energy and clear-headedness. Scientific studies support these subjective finding. One French study even showed a slower decline in cognitive ability among women who consumed caffeine. Other possible benefits include helping certain types of headaches. These research findings are interesting, but still need to be proven.
Title | About caffeine |
Facts | |
Caffeine if additive. | If you use caffeine , you may become physically dependent on it to some extent. Caffeine doesn't cause the severity of withdrawal or harmful drug-seekingof addictive drugs or alcohol. |
Caffeine is to cause insomnia. | Your body can 75% of the caffeine that you have consumed within eight to ten hours. Drinking one or two cups of coffee in the morning has no effect on your sleep at night. consuming caffeine at least six hours before going to bed, and your sleep won't be affected. |
Caffeine harms children. | Consuming caffeine within the limit does no harm to children. Energy drinks that contain a lot of caffeine and sugar have gained increasing among children. It is not the caffeine itself but caffeinated drinks that are generally not good for children. |
People don't benefit from caffeine. | Caffeine can help people become more alert, concentrated,, and clear-headed. Caffeine may help ease problem with . |
Why is setting goals important? {#blank#}1{#/blank#} Instead of just letting life happen to you, goals allow you to make your life happen. Successful people imagine how their life should be and set lots of goals.
By setting goals you are taking control of your life. It's like having a map to show you where you want to go. Think of it this way. There are two drivers. One has a destination in mind which can be found on a map. She can drive straight there surely without any wasted time of wrong turns. {#blank#}2{#/blank#} She starts off at the same time from the same place as the first driver, but she drives aimlessly around, never getting anywhere, just using up gas. Which driver do you want to be?
Winners in life set goals and follow them through. They decide what they want in life and then get there by making plans and setting goals. {#blank#}3{#/blank#} Goals aren't difficult to set and they aren't difficult to reach.
{#blank#}4{#/blank#} You are the one who must decide what to achieve and in what direction to aim your life.
Research tells us that when we write a goal down we are more likely to achieve it. {#blank#}5{#/blank#} Like a contract(合同) with yourself, they are harder to neglect or forget. Also when you write your goals in a particular way, you are able to make yourself continuously aware of situations that will bring you nearer to your goal.
A.Because everybody should have a goal in his mind. B.Unsuccessful people usually just let life happen by accident. C.The other driver has no goal, or destination or map. D.It's difficult for a driver to reach his destination without a map. E.It's up to you to find out what your goals really are. F.Because goals can help you do, be, and experience everything you want in life. G.Written goals can be reviewed regularly, and have more power. |
Lindsay Renwick, the mayor of Deniliquin, a country town in New South Wales, misses the constant whir(嗡嗡声)of the rice mill whose giant fans dried the rice. The Deniliquin mill, the largest rice mill in the Southern Hemisphere (南半球), once processed enough grain to meet the needs of 20 million people globally. But six years of drought have had a destructive effect, reducing Australia's rice crop by 98 percent and leading to the mothballing of the mill last December.
Drought affects every agriculture industry based in Australia, not just rice – from sheep farming, the country's other backbone, to the cultivation of grapes for wine, the fastest-growing crop there, with that expansion often coming at the expense of rice. The drought's effect on rice has produced the greatest impact on the rest of the world, so far. It is one factor contributing to skyrocketing prices, and many scientists believe it is among the earliest signs that a warming planet is starting to affect food production.
Researchers are looking for solutions to global rice shortages – for example, rice that blooms earlier in the day, when it is cooler, to fight against global warming. Rice plants that happen to bloom on hot days are less likely to produce grains of rice, a difficulty that is already starting to emerge in inland areas of China and other Asian countries as temperatures begin to climb. 'there will be problems very soon unless we have new varieties of rice in place,” said Reiner Wassmann, climate change director at the International Rice Research Institute (IRRI). The recent reports on climate change carried a warning that could make the news even worse: that existing models for the effects of climate change on agriculture did not yet include newer findings that global warming could reduce rainfall and make it more variable.
Yet the effects of climate change are not uniformly bad for rice. Rising concentrations (浓度) of carbon dioxide, the main greenhouse gas, can actually help rice – although the effect reduces or disappears if the plants face unnecessary heat, inadequate water, severe pollution or other stresses. Still, the flexibility of farmers here has persuaded some climate experts that, particularly in developed countries, the effects of climate change may be relieved, if not completely avoided. “I'm not as negative as most people,” said Will Steffen, director of the Fenner School of Environment and Society at Australian National University. “Farmers are learning how to do things differently.”
Meanwhile, changes like the use of water to grow wine grapes instead of rice carry their own costs, as the developing world is discovering. “Rice is an essential food,” said Graeme Haley, the general manager of the town of Deniliquin. “Wine is not.”
Phenomenon | Six years of drought reduced Australia's rice crop by 98%, leaving the rice mill{#blank#}1{#/blank#} |
{#blank#}2{#/blank#}of drought and climate change | Every Australian agriculture industry is affected,{#blank#}3{#/blank#}from sheep farming to the cultivation of grapes for wine. The whole world is in{#blank#}4{#/blank#}of rice. Prices rise{#blank#}5{#/blank#} . Temperatures begin to climb, causing{#blank#}6{#/blank#}rice production. |
{#blank#}7{#/blank#}to global rice shortages | Seek a new variety of rice that blooms earlier when it is cooler as a{#blank#}8{#/blank#} |
Some good news | Unless faced with unnecessary heat, inadequate water or other stress, the main green house gas can actually do{#blank#}9{#/blank#}to rice. Farmers are flexible and they can do things{#blank#}10{#/blank#}. |
Digitalization could Pay Off in Health and Sustainability
With technology permeating (渗透) everything we do, it has led to a significant transformation in the workplace — specifically, how, where, who is working and what work employees do. The speed of change across industries has also caused greater uncertainty as many businesses rethink the way they manage their talent and real estate.
For one, automation and artificial intelligence will change many job functions—particularly jobs and tasks that are manual or process driven. Research has found that the future workforce will be divided into three parts;core employees,freelancers(自由职业者)and consultants.Core employees will be concentrated in smaller and fewer locations, ideally in central business districts with transportation and amenities(便利设施) concentrated nearby —reducing their energy and resource usage. This smaller core workforce could mean smaller office footprints requiring less energy from power and less waste produced. In parallel, the appearance of the “liquid workforce”— freelancers, consultants and more — means potentially less commuting(通勤) and perhaps a cleaner way of working. The need for flexibility to accommodate the uncertain operating environment and more project-based work could require possibly less material and waste in the building process.
We've seen how many forward-thinking organizations have already adopted more efficient real estate management in the form of smart buildings and smart offices. This is essentially powered by the Internet of Things(物联网) to drive efficiency and real-time optimization (最优化)of building operations such as automatic monitoring and optimization of air conditioning— of particular interest in Asia, where indoor as well as outdoor air quality is a long-time issue.
Some features of smart buildings and workplaces also announce a shift to a less paper-based workplace. Companies are also accepting a whole view of sustainability. They're thinking about more than cost-savings or making the most of space. They are considering creating a healthy, fulfilling, and productive environment for employees.
We now speak about healthy buildings instead of simply sustainable ones. In fact, the World Green Building Council now promotes the concept of healthy green buildings—buildings that are not only environmentally sensitive but also provide for the well-being of staff. For instance, buildings with more access to nature and greenery make a significant difference to workers. A survey done last year found that over 90% of those surveyed felt more productive and creative with access to fresh air, indoor light, healthy food, fitness centers and even mental health services.
Overall, the drive towards a digitized workplace and improved employee experience could just lead us to a healthier, happier life and a more sustainable future.
Digitalization could Pay Off in Health and Sustainability | |
Introduction | As digitalization influences the workplace and employees in many ways, business owners have to {#blank#}1{#/blank#} on their way of managing. |
Effects of digitalization on the {#blank#}2{#/blank#} | Due to automation and artificial intelligence, future employees will be classified into three categories: core employees, freelancers and consultants. ●Core employees will be concentrated in central business districts {#blank#}3{#/blank#} by various amenities, which help to avoid a(n) {#blank#}4{#/blank#} of their energy and resources. ●Freelancers and consultants have no need to{#blank#}5{#/blank#} regularly from one place to another, which will leave {#blank#}6{#/blank#} carbon footprints. |
Effects of digitalization on the workplaces | ●Smart buildings and smart offices powered by the Internet of Things have been adopted by many forward-thinking organizations. ●Companies are thinking about reducing their reliance on {#blank#}7{#/blank#} and building a healthy workplace, which is beneficial to staffs' work in the long term. ●Green buildings are not only {#blank#}8{#/blank#} to the environment but also do good to employees' health. According to research, being {#blank#}9{#/blank#} to nature and greenery can improve ones' work efficiency and {#blank#}10{#/blank#}. |
Why Is Recycling Important?
When you throw things away, you might be very glad to do it. Unfortunately, that's not the end of the story. The things we throw away have to go somewhere-usually they go off to be buried underground in a landfill (垃圾填埋) or burnt in an incinerator (焚化炉). Landfills can be terribly polluting. They look awful, they smell terrible, they take up space that could be used for better things, and they sometimes create harmful soil and water pollution that can kill fish in our rivers and seas.
One of the worst things about landfills is that they're wasting a huge amount of useful material. It takes a lot of energy and a lot of resources to make things, and when we throw those things in a landfill, at the end of their lives, we're also saying goodbye to all the energy and resources instead of burying it in landfills. That certainly has advantages: it reduces the amount of waste that has to be buried and we can get useful energy from it. But it can also produce harmful air pollution, and burning almost anything adds to the problem of global warming and climate change.
The trouble is, we're all in the habit of throwing things away. In the early part of 20th century, people used materials much more wisely-especially in World War Ⅱ, but in recent decades we've become a throwaway society. We tend to buy new things instead of getting old ones repaired. A lot of men use single-use razors (剃须刀), for example, instead of buying reusable ones, while a lot of women wear single-use stockings. Partly this is to do with the great convenience of throwaway items. It's also because they're cheap. But wasteful period in our history is coming to an end.
We're finally starting to realize that our lifestyle is creating problems for future generations. Earth is soon going to be running on empty if we carry on as we are. Americans have a much richer life than almost anyone else on Earth. What happens when people in developing countries such as India and China decide they want to live the same way as us? According to the environmentalists, we'd need two Earths to satisfy all their needs.
Why Is Recycling Important | |
Ways to deal with rubbish | •Bury rubbish underground in a land fill. •{#blank#}1{#/blank#}rubbish in an incinerator. |
Disadvantages of the landfill | •It looks terrible and smells bad. •It {#blank#}2{#/blank#} too much space which could be put to better use. •It pollutes soil and water. •Large amounts of{#blank#}3{#/blank#} materials are wasted. |
The advantages and disadvantages of burning rubbish | •The waste that needs to be buried is {#blank#}4{#/blank#} after burning. •It can{#blank#}5{#/blank#} useful energy. |
•It causes air pollution. •It has a bad {#blank#}6{#/blank#} on global warming and climate change. | |
The problem | •People are used to {#blank#}7{#/blank#} things away. •Both men and women prefer single-use products because they are {#blank#}8{#/blank#} and more convenient. |
The writer's concern | •The lifestyle of Americans now will create a {#blank#}9{#/blank#} for future generation. •If people all over the world {#blank#}10{#/blank#} their lives in the same way as Americans, the Earth will be ruined very quickly. |
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