There are billions of people on this planet, and many of us love to eat meat. Can the demand be filled in a sustainable(可持续的) and affordable way? A bunch of businessmen are not only optimistic but are working to make this happen sooner than you may think.
The environmental effects caused by meat consumption (食用)—waste, animal treatment, health problems and even the greenhouse gas effects that are potentially caused by methane gas produced by cows—have given rise to a number of startups(新兴公司)looking to develop meats in different ways.
For example, San Francisco-based Memphis Meats is developing cell-based meats in its labs without requiring any animals. Israel’s Future Meat Technologies is doing the same by producing fat and muscle cells that are being tested by chefs in Jerusalem. All of these companies use special processes to harvest cells from animals and grow them in a lab.
But don’t worry if you’re not a meat lover. Startups such as Jet Eat, which is also based in Israel, are working on food products grown in labs that are plant-based and replicate (复制) meats using natural elements while still keeping flavor, consistency and the “overall sensory experience”, according to a report on NoCamels. Jet Eat, which was founded in early 2018, aims to 3D-print their lab-grown products by 2020.
As you can imagine, there are plenty of barriers facing the industry. Educating the public is a big one. Another controversial issue is the labeling of the products. Recently both the USDA and the Food and Drug Administration(FDA) announced that they will begin jointly controlling the new “cell-based meat” category.
Many of us have concerns about the challenges facing future generations as our global population increases and the earth’s natural resources decreases. The good news is that there are plenty of businessmen around the world—like those producing lab-grown meats—who are working to solve some of these problems and make a little money in the process. Nothing wrong with that.
1.Why do some companies begin to develop new kinds of meats?
A.To analyse the causes of air pollution.
B.To stress the importance of protecting wild animals.
C.To make people less interested in eating meat and more healthy.
D.To meet people’s demand for meat in environmentally friendly ways.
2.What’s special about the lab-grown meats of Jet Eat?
A.They cost less. B.They are plant-based.
C.They are more delicious. D.They are available on the market now.
3.Which of the following is a barrier lab-grown meat industries must deal with?
A.How to let people accept the meat. B.How to give the meat an elegant name.
C.How to produce the meat in large amounts. D.How to reduce the cost of making the meat.
4.What’s the author’s attitude towards lab-grown meats?
A.Supportive. B.Opposing. C.Ambiguous. D.Cautious.
难度: 中等查看答案及解析
Uncover secrets of the world’s oldest civilizations and see natural wonders that will take your breath away. Through our tours you’11 encounter wild animals，see unbelievable landmarks and experience the local traditions of native tribes(部落).
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Uniting North African culture and French flavor in harmony，Morocco attracts tourists with its old-world traditions and splendid landscapes. Our Morocco tour from the U. S. contains must-see destinations. And，if you like，a noble camel will take you on an unforgettable ride during a full-day Sahara Desert trip. You’ll also have time to experience the country’s delightful customs.
Deluxe Dubai＆Abu Dhabi
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If you appreciate big and striking，consider this Dubai and Abu Dhabi tour package from the U. S. Thanks to enormous wealth due to its oil reserves，the UAE’s largest emirate(酋长国) has transformed into an impressive destination you have to see to believe. Dramatic Dubai is developing rapidly too. It’s become a truly global，open society where visitors are absorbed in exciting possibilities. Experience all of the must-sees，as your guide provides context，dining ideas and personalized tips on maximizing your free time.
Cape Town & Safari Express
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If South Africa is one of the many destinations on your wish list，our Cape Town and Safari package from New York City is a very smart choice. The tour includes three full days in this port city，where you can book extraordinary optional tours that show south Africa’s incredible diversity. Discover the long-lasting legacy(遗产)of Nelson Mandela，explore the scenic Winelands or even go shark cage diving.. if you dare!
1.What will you do on Grand Morocco tour?
A.Have delicious French food. B.Experience mixed cultures.
C.Walk across Sahara Desert. D.Enjoy the modern civilization.
2.Why is Abu Dhabi so wealthy?
A.For the amount of oil. B.For its special location.
C.For the tourist destinations. D.For its personalized services.
3.On which tour can you experience all adventurous activity?
A.Sahara Desert. B.Grand Morocco.
C.Deluxe Dubai & Abu Dhabi. D.Cape Town & Safari Express.
难度: 中等查看答案及解析
A 2018 report found that food waste would increase by a third to 2. 1billion tons by 2030. Beyond the cost of the waste itself，thrown-away food generates a gas that contributes to climate change.
Home delivery meal kits(盒)can reduce food waste by more than two-thirds，but suppliers need to switch to reusable packaging to make them environmentally friendly.
Tailor-made meal kits cut waste by providing people with precise amounts of fresh ingredients(烹饪原料)for chosen recipes，meaning leftovers are minimized. But while the delivery services score well on reducing food waste，buying the same food ingredients from the supermarket almost always saves energy overall simply because meal kits use so much single-use packaging. The good news is that if people have meals that are tailored for consumption，they won’t overbuy and have less food waste. They fine-tune the amount of food to what they will actually eat.
Meal kits can reduce transport emissions(排放)if people go to the supermarket less frequently. If people only go and buy such goods as soap and toilet paper，they may only have to visit once every couple of months. A delivery truck can carry meals for a lot of people in the neighborhood. So dozens of car trips might be replaced with one truck trip.
However，study found that even if delivery meal kits reduced food waste to zero，they would still use up more energy overall than buying the same food from the supermarket unless the energy used for the meal kit packaging was cut by a fifth. The packaging is a killer if it’s single-use and thrown away，which can make all the environmental benefits lost. But if the packaging can be reused，if it’s glass bottles，like in the old days，we can get some benefits.
1.What can we learn about home delivery meal kits?
A.They can cut down on daily expenses.
B.They will totally solve the problem of food waste.
C.They can keep energy consumption to a minimum.
D.They will benefit the environment with reusable packaging.
2.What does the underlined word“fine-tune”in paragraph 3 mean?
A.Attach. B.Adjust.
C.Raise. D.Compare.
3.The author suggests carrying meals with a delivery truck to__________.
A.reduce transport emissions B.save more food
C.shop only in the supermarket D.shorten car trip distances
4.What’s the author’s attitude to meal kits?
A.Supportive. B.Unfavorable.
C.Objective. D.Indifferent.
难度: 困难查看答案及解析
In a major medical breakthrough, Tel Aviv University researchers have “printed” the world's first 3D vascularized (有血管的）engineered heart using a patient’s own cells and biological materials. Their findings were published on April IS in a study in Advanced Science.
“This is the first time anyone anywhere has successfully engineered and printed an entire heart,” says Prof. Tal Dvir of Department of Materials Science and Engineering, who led the research for the study. “This heart is made from human cells and patient-specific biological materials. In our process, these materials serve as the bioinks, something made of sugars and proteins that can be used for 3D printing of complex tissue models，” Prof, Dvir says. “People managed to 3D print the structure of a heart in the past, but not with cells or with blood vessels (血管).Our results demonstrate the potential of our approach for engineering personalized tissue and organ replacement in the future.”
According to Prof. Dvir，the use of “ native ” patient-specific materials is important to successfully engineering tissues and organs.
The researchers are now planning on culturing the printed hearts in the lab and “ teaching them to behave” like hearts, Prof. Dvir says. They then plan to transplant the 3D-printed heart in animal models.
“We need to develop the printed heart further，” he concludes. “The cells need to form a pumping ability ； they can currently contract (收缩），but we need them to work together. Our hope is that we will succeed and prove our method’s efficacy (功效)and usefulness. “Maybe, in ten years, there will be organ printers in the finest hospitals around the world，and these procedures will be conducted routinely. ”
1.What does Prof. Dvir think of an early 3D-printed heart?
A.It was highly practical. B.It was too expensive.
C.It was personalized. D.It was too simple.
2.What do we know about the latest 3D-printed heart?
A.It can be cultured in the lab.
B.It can match a patient perfectly.
C.It has been transplanted in animals.
D.It has been widely used in hospitals,
3.What is Prof, Dvir's attitude to the development of the printed heart?
A.Ambiguous. B.Positive.
C.Disapproving. D.Cautious.
4.What is the author's purpose in writing the text?
A.To explain the basic principle of 3D technology.
B.To introduce a breakthrough of medical research.
C.To doubt the medical value of a new invention.
D.To prove the effectiveness of the new technology.
难度: 困难查看答案及解析
I don’t know anyone who has been handed only roses. We all encounter hardships. Some we see coming; others take us by surprise.1.The question is: When these things happen, what do we do next?
When someone is suffering, we need to follow the Platinum Rule:2.Put ourselves in other’s shoes and respond with understanding or better yet, action.
3.It comes from deep within us and from support outside us. It comes from gratitude for what’s good in our lives and from learning in to the suck.4.I learned that when life pulls you under, you can kick against the bottom, break the surface, and breathe again.
Although it can be extremely difficult to grasp, the disappearance of one possible self can free us to imagine a new possible self. After tragedy, we sometimes miss these opportunities because we spend all of our emotional energy wishing for our old lives. As Hellen Keller put it, “5.But often we look so long at the closed door that we do not see the one which has been opened for us.”
A.It can help a person step out of the trouble.
B.Treat others as they want to be treated.
C.When one door of happiness closes, another opens.
D.Death ends a life, but it does not end a relationship.
E.Another way you answer it depends on your ability of recovery.
F.It comes from analyzing how we process grief and from simply accepting that grief.
G.It can be as tragic as the death of a child, or as disappointing as a dream that goes unfilled.
难度: 中等查看答案及解析
Mary, 16, was suffering from cancer. As a father, Mitchell always stayed home to care for her. He said the _________left them financially worse off. Then a group called Growing Hope _______in with $1,800 to help with his living costs.
_______, he wanted to pay it back. In his youth, he had been a _________. So at age 40, Mitchell took up the _________again, participating in two fights in Fairfax. During this time, he _________ his daughter. And for six months he did little but mourn.
One day, Mitchell _________ a Mark Twain quote —The two most important days in your life are the day you are born and the day you _______ why. “After I read that quote, I was going to spend the rest of my life helping kids with cancer and their families,” he said.
Mitchell thought of creating a foundation, yet boxing did not seem_______any more for fundraising due to his age. Then he found that ________ could be a source to raise money. In the Corps Marathon he cut a striking figure on the course. ________ by this success, he set his sight higher. He __________ each of the miles of the race to a different child with cancer, and he carried their________ with him. Years after his daughter’s death, Mitchell now________ up in the morning knowing his________.
1.A.atmosphere B.crisis C.situation D.poverty
2.A.brought B.stepped C.took D.broke
3.A.Grateful B.Hopeful C.Sorrowful D.Regretful
4.A.runner B.singer C.boxer D.fighter
5.A.helmets B.gloves C.boxes D.sneakers
6.A.cured B.accompanied C.comforted D.lost
7.A.came upon B.agreed on C.looked to D.count on
8.A.consider B.negotiate C.discover D.launch
9.A.abstract B.realistic C.energetic D.critical
10.A.funding B.singing C.running D.projecting
11.A.Depressed B.Embarrassed C.Shocked D.Motivated
12.A.emerged B.donated C.enhanced D.conveyed
13.A.smiles B.parents C.strengths D.pictures
14.A.stands B.goes C.wakes D.climbs
15.A.passion B.destination C.course D.purpose
难度: 简单查看答案及解析
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
There are many great destinations in the UK, one of 1.is the South-West of England. The most popular regions surrounding the South-West 2.(be) the counties of Devon and Cornwall. They are by the coast and known for having some of 3.sunniest weather in the UK.
In the heart of the South-West, Dartmoor National Park was voted the UK’s favourite in 2016. There are plenty of breathtaking 4.(walk) to choose from which will lead you5. (discover) Dartmoor's ancient and rugged (崎岖的) charm!
In the South-West you will find plenty of attractive and often6.(desert) beaches. Some examples include Whitesand Bay in Cornwall and Woolacombe beach in Devon. If you don’t mind the 7.(slight) cooler temperatures than other beach destinations in Europe, you are in for a real treat!
Apart from8.(surround) by beautiful nature, the South-West is full of urban gems (精华). The city of Exeter in Devon has great centers, as well as lots of cafes 9. pubs. Cornwall has10.(it) own treasures too — pretty villages and towns such as St Ives and Mousehole line the coastline, and make for the perfect locations to spend those relaxing summer afternoons!
难度: 简单查看答案及解析
假设你是李华，你校外教老师Chris特别喜欢戏曲文化。本周六滨江大剧院将上演越剧《梁山伯与祝英台》。请你用英语给Chris写一封电子邮件，邀请他一起观看演出。内容包括：
1. 演出时间地点；2. 提出邀请；3. 观剧后活动建议。
注意：
1.词数 80 左右；
2. 可以适当增加细节, 以使行文连贯。
参考词汇：越剧：Shaoxing Opera 《梁山伯与祝英台》Butterfly Lovers
Dear Chris,
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Yours,
Li Hua
难度: 简单查看答案及解析
阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。续写的词数应为150左右。
When I spent the last summer with my Grandmother in Warwick, N.Y., she sent me down to the grocery store with a long shopping list. Staring at all the items on the list, I wondered how I could find anything on the packed shelves around me. But she insisted.
I walked up to the counter. Behind it was a lady like no one I’d ever seen. Thick glasses rested on the tip of her nose, gray hair was piled on her head.
“Excuse me,” I said. She looked up.
“You’re that Clements kid,” she said. “I’m Miss Bee. Come closer and let me get a look at you.” She pushed her glasses up her nose. “I want to be able to describe you to the policeman if something goes missing from the store.”
“I’m not a thief!” I was shocked. I was too young to be a thief!
“Maybe not, but I can tell you’ve got potential.” She went back to reading her newspaper.
“I need to get these.” I said, holding up my list.
“So? Go get them.” She ignored my need of a favor, “There’s no one here except you and me and I’m not your servant, so I suggest you start looking for the things on that list.”
The store was a puzzle to a seven-year-old, and it seemed to hold all the goods in the world. I complained about this task Grandma had set me to do while trying to find all the items on my list. It took me one and half an hour to do it, and the mean lady behind the counter didn’t even bother to look at me once.
I visited Miss Bee a couple of times a week that summer. Sometimes she sold me an old newspaper instead of one that was the latest. Sometimes she overcharged me and didn’t seem embarrassed when I pointed it out. Going to the store was more like going into battle, but I survived. By summer’s end the shopping trip that had once taken me an hour was done in 15 minutes. The morning I was to return to Brooklyn, I stopped in to get a soda.
Para. 1:
“All right, Miss Potential, what did you learn this summer?” she said.
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Para. 2:
One day after all those years my seven-year-old daughter came to me with homework troubles.
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难度: 中等查看答案及解析