Air travel can be annoying. But research now suggests global warming could make it much worse. To get off the ground in really hot weather, planes may be forced to carry fewer passengers. That might mean a little more space, which would be good. However, it also would make the passengers pay more.
Average air temperatures around the world are rising because people are polluting the air with increasing amounts of greenhouse gases, which, such as carbon dioxide, are a byproduct of burning fuels. Those warmer temperatures can influence an airplane’s ability to fly because air molecules (分子) spread out more as the air warms. This produces less lift under a plane’s wings, so a plane must be lighter to take off in hot weather than on cooler days.
It can even prove too dangerous for some planes to attempt a take-off. A record of June heat wave in the American Southwest, for instance, caused flight cancellations in Phoenix, Ariz. One airline ‘s planes were cleared to operate only up to 47.8℃. On June 20, Phoenix reached 48.3℃!
Radley Horton is a climate scientist at Columbia University. Two years ago, he and his graduate student Ethan David Coffel studied the effect of warming at four US airports and found that warming of track could triple (使成三倍) the number of days when planes face weight restrictions. Later, they explored the effect of rising temperatures on five types of commercial planes flying out of 19 of the world’s busiest airports. In the coming decades, as many as one to three out of every 10 flights that take off during the hottest time of day could face weight restrictions, they found. In some cases, a typical 160-seat plane would have to remove 4％of its weight. That would be equal to taking a dozen people off the plane, the researchers calculated.
1.How would global warming affect air travel according to the first paragraph?
A.It’ll add to the danger of flying.
B.It’ll increase passengers’ travel cost.
C.It’ll make flying much more comfortable.
D.It’ll encourage more people to travel by plane.
2.What is the second paragraph actually intended to explain?
A.How global warming is happening. B.What decides a plane’s ability to fly.
C.Why global warming affects flying. D.Where greenhouse gases are created.
3.What is the last paragraph mainly about?
A.Reasons for flight cancellation. B.Financial condition related to hot air.
C.The tendency of temperature change. D.Findings of effects of warming on flying.
4.What should be the best title for the text?
A.Air Travel isn’t Recommended during Hot Weather
B.Rising Temperatures May Reduce the Number of Flights
C.Weight Restrictions Are More Common in More Airports
D.Hotter Air May Lead to Planes Carrying Fewer Passengers
When 6-year-old Jack Foley crossed the finish line last month at the Long Beach Kids Triathlon, it was more than an athletic achievement. His completion marked a remarkable recovery from a rare heart condition.
The journey began before Jack was born.
At a routine 20-week examination, doctors told parents-to-be Rob Foley and Lauren Kiefer-Foley of Long Island, New York, that the fetus’ (胎儿的) heart wasn’t properly developing. “The doctor told us, ‘we can’t see the left side of the baby’s heart,’ Kiefer-Foley recalled.” He told us, “you need to get to a cardiologist (心脏病专家) first thing in the morning.”
Further tests would confirm a diagnosis of hypo plastic left heart syndrome, a rare birth fault affecting the heart’s ability to pump blood through the body. Doctors informed the couple about the risks and challenges their child could face. “We were advised by many doctors to terminate our pregnancy because the condition is so severe. They told us that most babies don’t even survive birth, let alone the first surgery,” Kiefer-Foley said.
Nonetheless, the couple decided to give their baby a chance.
After Jack was born at full-term via a scheduled C-section (剖腹产), doctors took him straight to a care unit to administer the level of care he would need before his first open-heart surgery days later. “When the doctor said ‘it’s a boy!’ I didn’t get to see him for hours after that.” Kiefer-Foley said. They would also have to wait until after Jack’s first surgery to hold him for the first time.
With a successful delivery behind them, it was now up to Dr. Emile Bacha, chief of Morgan Stanley Children’s Hospital to guide Jack through a series of surgeries to repair the newborn’s heart.
1.Why did the author say “it was more than an athletic achievement” in Paragraph 1?
A.Jack was only six years old.
B.The event was too difficult.
C.Jack once suffered from severe heart disease.
D.Jack didn’t recover from severe heart disease.
2.What was the bad effect of Jack’s disease?
A.It led to inadequate blood supply. B.The beat of heart was not heard.
C.His intelligence will not develop properly. D.The right side of the baby’s heart can’t be seen.
3.What does the underlined word “terminate” in Paragraph 4 refer to?
A.continue B.stop
C.change D.adjust
4.What will most probably be talked about in the next part of the text?
A.Jack’s journey all over the world.
B.The sorrow and despair of Jack’s parents.
C.Jack’s major academic achievement.
D.Jack’s remarkable recovery from heart disease.
Bookstores are a traveller's best friend: they provide convenient shelter in bad weather, and they often host readings and other cultural events. Here is a look at world’s six greatest bookstores.
Adrian Harrington—since 1971. Rare books; rare first editions; leather bound sets and general antiquarian (古玩). Address: 64A Kensington Church Street, Kensington, London, England, U.K.
Another Country—Kreuzberg, Berlin, Germany. Another Country is an English Language second hand bookshop which is mostly used as a library. They have about 20,000 books that you can buy or borrow. Some regular events are held at the shop, such as readings, cultural events, social evenings and film nights.
Atlantis Books—Oía, Santorini, Greece. Atlantis Books is an independent bookshop on the island of Santorini, Greece, founded in 2004 by a group of friends from Cyprus, England, and the United States. Throughout the year it has hosted literary festivals, film screenings, book readings, and good old fashioned dance parties.
Bart’s Books—Ojai, California, U.S.A. “The World’s Greatest Outdoor Bookstore”, a bookstore founded by Richard Bartinsdale in 1964. Shelves of books face the street, and regular customers are asked to drop coins into the door’s coin box to pay for any books they take whenever the store is closed.
10 Corso Como—Milan, Italy. Extensive selection of publication on art, architecture, design, graphics and fashion, along with a strong emphasis on photography. It was founded in 1990 in Milan, Italy, by Carla Sozzani.
The Bookworm—A bookshop, library, bar, restaurant and event space, now with four divisions in three cities—Beijing, Suzhou and Chengdu. The interconnecting rooms with floor-to-ceiling books on every wall are light and airy in summer, yet warm and comfortable in winter.
1.Which of the following bookstores has the longest history?
A. Adrian Harrington. B. Atlantis Books.
C. Bart’s Books. D. 10 Como Bookshop.
2.What can you do in Atlantis Books?
A. Attend a festival. B. Learn photography.
C. Enjoy rare books. D. Buy books anytime.
3.How is The Bookworm different from the other bookstores?
A. It is used as a library. B. It hosts all sorts of activities.
C. It focuses on photography. D. It has branches in different cities.
假定你是李华，你的美国朋友Linda打算向你学习制作风筝。请你写封邮件告知你的教学计划。内容包括：
1. 时间和地点；
2. 内容：学习制作风筝；
3. 课前准备：读有关风筝的书并挑选自己最喜欢的风筝图片。
注意：1. 词数100左右；
2. 可以适当增加细节，以使行文连贯。
Dear Linda,
I am writing to tell you about our kite-making class next week.
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Dear David,
I am delighting to receive your email, in that you asked me what on earth the 5G era will bring us. Now I am writing an email to tell you anything about it.
Indeed, the 5G era is just around comer. Talking of the era, you should first get to know that what 5G means. It was short for the fifth generation mobile communication technology. With the arrival of the 5G era, IOT (物联网) will be great advanced in the future. Besides, unmanned technologies will become more successful but there will be more and more smart home, which can serve us in our life.
Let me expect the 5G era together.
Yours,
Li Hua
阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。
It’s 6 a. m. The ring is 1. (early) than usual because the smart clock scanned your schedule in the morning and adjusted according to 2.. Your shower automatically turns on and warms to your preferred 103°F. The electric car is ready 3. (go), charged by the solar panels or wind turbines on your roof. When you get home later, there is an unexpected package waiting for you, 4. (deliver) by drone (无人机). You open it and find cold medicine. It turns out that the health sensors in your bathroom have detected signs of an 5. (ill) that is approaching and placed an order automatically.
Swedish research firm Berg Insight says 63 million American homes will 6. (regard) as “smart” by 2022, with everything from Internet-connected light bulbs 7. cameras that let us spy on our pets from the office. A decade from now, experts say, we 8. (move) from turning the lights on and off with our voices to total immersion (沉浸) in the Internet of Things. Thanks to advancements in artificial intelligence, the smartest homes will be able to 9. (true) learn about their owners and even their needs. Developments in robotics will give us machines 10. offer a helping hand with cleaning, cooking and more.
