1 . It’s unlikely that we’ll see a dodo, a flightless bird, walking this earth anytime again, according to Beth Shapiro, a evolutionary molecular biologist.
“When most people think about de-extinction, they’re imagining cloning,” Shapiro said. Cloning, the approach that created Dolly, the sheep in 1996 and Elizabeth Ann, the black-footed ferret in 2020, creates an identical genetic copy of an individual by putting DNA from a living adult cell into an egg cell from which the nucleus (细胞核) has been removed. Adult cells contain all the DNA needed to develop into a living animal. Egg cells then use that DNA as a blueprint to turn themselves into many kinds of cells——skin, organs, blood and bones——the animal needs.
“But no living cells from dodos exist. Instead,” Shapiro said, “you’d have to start with a closely related animal’s genome (基因组) and then change it into one similar to dodos.” For example， mammoths (猛犸) are also extinct，but they were very closely related to modern Asian elephants, so researchers are attempting to bring mammoths back from extinction by creating a hybrid mammoth with some mammoth genes replacing part of the elephant genome in an elephant egg cell. However, there are likely millions of genetic differences between the genome of an Asian elephant and that of a mammoth according to Shapiro.
As for the dodo, its closest living relative is the Nicobar pigeon. Mammoths and Asian elephants are pretty closely related, whereas it had been more than 20 million years since the dodo and the Nicobar pigeon had any common ancestors. Genetic differences between the two bird species are therefore much greater, making it a formidable task to create a successful hybrid in the lab, Shapiro said.
Even if scientists manage to bring dodos back, the island where they once lived is a very different place nowadays, which make it impossible to reintroduce dodos without major intervention.
1. What is Paragraph 2 mainly about?| A．The special role of DNA. |
| B．The process of cloning. |
| C．The development of cloning. |
| D．The complexity of cloning. |
| A．Dodos are harder to bring back to life. |
| B．Their living cells are hard to preserve. |
| C．Cloning can be used to recreate extinct animals. |
| D．They share a similar genome with Asian elephants. |
| A．Urgent. |
| B．Possible. |
| C．Tough. |
| D．Different. |
| A．Favorable. |
| B．Intolerant. |
| C．Objective. |
| D．Negative. |
“Why are we bringing groceries for Mrs. Killinger?” Bobby asked his mother, Anna, as they walked back from the supermarket with a few extra bags for their elderly neighbor. He enjoyed helping his mother with these tasks, but they had never bought anything for any neighbor before.
“Honey, Mrs. Killinger is now having trouble walking around, so I offered to bring some things from the market,” Anna explained as they climbed up the wooden steps to Mrs. Killinger’s house and rang the doorbell.
“Ok, but she could get a wheelchair and move around,” the boy commented as if it was the most straightforward solution in the world.
“You know, Bobby. Mrs. Killinger doesn’t have the money to buy one right now.
They can get expensive.” Anna explained, and Bobby pursed his lips in thought.
Mrs.Killinger answered the door, smiled, and invited them for some coffee and cookies. Bobby noticed how slowly she moved, and an idea formed in his mind. He told the older woman and his mother all about it, and they grinned at him indulgently (宽容地笑).Neither of them thought Bobby would do it.
That’s why Anna was surprised the following day when Bobby had made several ads. “Mom, can you add your phone number here, so people can call me with work?”
“Oh, honey. This is very sweet. But I don’t know if it’ll be enough to raise the money she needs to buy a wheelchair,” Anna explained. She loved that her son had such a big heart, but he didn’t want him to be heartbroken if no one called or he couldn’t raise the money.
“Well，at least，I can say that I tried to help，” Bobby chirped (欢快地说)with his bright smile and eager eyes. Anna nodded and added her phone number to the ads. In his ad, Bobby offered his “services” which included helping with shopping, mowing lawns, keeping company, and walking dogs. He also left the price of his services, which made Anna smile. He honestly just wanted to help.
注意：
1．续写词数应为150左右；
2．请按如下格式在答题卡的相应位置作答。
Anna helped him put up the ads around the neighborhood.
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Two weeks later, Bobby still hadn’t raise the amount of money he wanted.
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Confucius was born into a middle class family in Lu State, an area with the modern city of Qufu, in China’s Shandong Province. Now, he
Confucius also lived
Even up to the time of Confucius’s
Yet, his philosophical (哲学的) ideas survived during the later Han Dynasty. Emperor Han Wudi,
4 . Recycling is a great way of doing your bit for the environment and helping to protect the earth’s precious resources. However, a new study has revealed that our desire to be sustainable maybe doing more harm than good. According to waste company Biffa, this is because of “wish-cycling” — assuming that items such as disposable coffee cup sand pizza boxes will be recycled if put in the recycling bin. In fact, pollution from those items or other non-recyclables can result in recyclable items that have been put in the correct bin going to landfill. David Heaton, a business director at Biffa, said: “Pollution happens when items are disposed of in the wrong bins or haven’t been cleaned before being recycled.”
Experts at Biffa analyzed the amounts of non-target and non-recyclable materials that entered UK material recycling facilities between 2016 and 2020. It was found that, in 2016, the average pollution rate of recycling waste was 13.4 percent, rising over four years to 17 percent by the end of 2020. This shows that, even as people are becoming more eco-conscious, wish-cycling is increasing both in households and businesses.
The Biffa experts say that one of the best ways to prevent pollution of recycling is to clean recyclable waste before putting it in the bin. They suggest cutting off the top of old pizza boxes and only recycling that part to avoid pollution from the grease (油脂). Check the on-packaging recycling label to check it can actually be recycled When it comes to plastics, Biffa recommends checking the resin code, the number in the plastic triangle, to know whether it should go in the recycling bin. In general, resin codes 1, 2, 4 and 5 are recyclable, while 3, 6 and 7 are not. Larger items, like electronics, furniture and batteries, can also be recycled but often can not go in household recycling bins as they need specialist separating. These will need to be taken to recycling centers or sustainable waste management companies.
“It’s vital as a nation that we get better at effective ‘pre-cycling’— sorting waste correctly before collection to reduce pollution rates,” added Mr. Heaton.
1. What’s the truth of “wish-cycling” according to the first paragraph?| A．The desire to lead a sustainable life. |
| B．The good intention to help recycling. |
| C．The habit of throwing items that end up in landfills. |
| D．The practice of recycling items that can not be recycled. |
| A．People are becoming more eco-conscious. |
| B．Wish-cycling is on the rise in recent years. |
| C．Pollution happens less frequently in recycling facilities. |
| D．People are used to cleaning recyclable waste before putting it in the bin. |
| A．Dispose of electronics together with household waste. |
| B．Skip the step of checking the on-packaging recycling label. |
| C．Check the resin code of plastics to see whether it is recyclable or not. |
| D．Cutoff the top of old pizza box and throw the rest to the recycling bin. |
| A．Recycling: a Big Project | B．Wish-cycling: a New Trend |
| C．Wish-cycling: a Growing Concern | D．Pre-cycling: an Effective Method |
Yoghurt
It was a rough week. The price of oil skyrocketed as the temperature dropped sharply in Maine. We were looking at a high of eight degrees that week, and I had missed three days of work so my paycheck was going to be lower than normal. I was stressed, to say the least. I shopped strategically, looking for every possible way to cut pennies so I could buy groceries and keep the house warm.
My eight-year-old son didn't understand when I told him we were struggling that week. He wanted a special kind of yoghurt, but I didn't have the extra three dollars to buy it for him. It was the kind of yoghurt with a cartoon kid riding a skateboard on the front of the box, and a mere two spoonfuls in each cup. It was the kind of product that wastes a parent's money and makes me hate advertising.
I felt guilty as a parent when those big eyes looked at me with confusion, as if to say, “It's just yoghurt. What's the big deal?” So I found a way. I put something back as single mothers often do. He got his yoghurt.
On the way driving back from the grocery store, I noticed a homeless man holding a sign by the side of the road. My heart hurt, and I tried not to look at him. I watched people stay away from him on the street and walk by without even meeting his eyes. My son didn't seem to care much, either. I looked at the man closely then — bare hands grasping a piece of cardboard, snot frozen to his face, a worn-out jacket. And there I was struggling because I had to buy oil and groceries. But I decided to help. I pulled over to the man and handed him a five-dollar bill.
Paragraph 1:Seeing this, my son became confused and surprised.
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Paragraph 2:
On that day, my son performed an act that most adults wouldn’t have done.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________6 . For decades, I was a hard drinker who could drink anyone under the table. This lasted from the age of 27 until after 50, a golden time during which I felt very sorry for ex-drinkers and people who couldn’t or wouldn’t drink. How did they make it through social situations, especially parties? What did they do at the end of a workday to celebrate and relax?
When I first tried to quit drinking myself in my early 50s, I wasn’t sure at first how it would work for me. But I did it anyway.
During these years, I didn’t love not drinking. But I had to admit that when I was off booze, I looked and felt better physically: I slept more deeply, had more energy, exercised more. My mind was clearer. My moods were brighter. Parties were hard, and so was cooking at the end of a day of writing without a glass of wine at my elbow.
I finally quit drinking for real almost four years ago, on 12 July 2019, when a writer friend stayed with my husband and me after his wife kicked him out. After my husband had gone upstairs to bed, my friend sat on our sofa drinking an entire bottle of gin, complaining about his fate, until he passed out next to our dog, whose bed that sofa was.
I’m not going to lie: being sober is not a hot-air balloon ride.
| A．My body demanded it. |
| B．My health started improving rapidly. |
| C．It’s more like a hike in the mountains. |
| D．How did they quit drinking? |
| E．It was a wake-up call. |
| F．But the pluses seemed to outweigh the minuses. |
| G．How did they get through life? |
7 . The sun was shining brightly over our heads and sweat (汗水) was pouring off our backs and faces. We stood still without
It was
After this journey, we were more
Military training taught us perseverance (不懈) and determination. On the last day of our training, the confidence could be
| A．crying | B．making | C．sending | D．telling |
| A．nothing | B．anything | C．something | D．everything |
| A．wasted | B．spent | C．kept | D．took |
| A．strict | B．curious | C．interesting | D．normal |
| A．success | B．pleasure | C．worry | D．wonder |
| A．referred to | B．devoted to | C．turned to | D．listened to |
| A．sunlight | B．wealth | C．desire | D．health |
| A．received | B．helped | C．offered | D．happened |
| A．concerned | B．determined | C．interested | D．surprised |
| A．expected | B．expressed | C．disliked | D．rescued |
| A．escaped | B．moved | C．rode | D．rushed |
| A．larger | B．stronger | C．louder | D．lower |
| A．seen | B．heard | C．smelt | D．touched |
| A．thoughts | B．feelings | C．opinions | D．voices |
| A．travelling | B．falling | C．setting | D．smiling |
8 . One thing that has always attracted us is the food taboos (禁忌). There is one that seems to be acknowledged in the West: the idea that seedless (无籽) fruits are dangerous.
For those unfamiliar with this belief, it seems to go like this. The basic function of fruit in nature is to spread the seeds of the plant to ensure the survival of the species. When fruits are seedless, however, it is meant to be a sign that they want to give up their basic function. According to more extreme views, these fruits not only have fewer vitamins and minerals, but also are actually harmful to humans.
In fact, from the view of science, seedless fruits are the result of a biological development. While it is true that this development can be the result of human actions, it also happens in nature all the time. Often, it is a combination of both.
What effect does the absence of seeds have on nutrition (营养)? Well, seeds do often contain nutrients like fibre, which can mean seed-containing fruits are a little bit higher in fibre. They can also contain potentially beneficial nutrients. This, however, will make a difference only when you eat up the seeds, bite them with your teeth and break the seeds in a digestible form.
Then there is the question of popularity. It doesn't matter how nutrient-packed a crop is if people are unwilling to eat it. While the nutritional difference between seeded and seedless is very small, we know that the sale of seedless fruits has greatly increased since seedless forms were introduced to the market. So when seen in this wider viewpoint, rather than being a loss for nutrition in our diets, seedless fruits have been a gain for us human beings.
1. What do western people with extreme views believe?| A．Seedless fruits are the result of a biological process. |
| B．Seedless fruits could actually do harm to human beings. |
| C．Seedless fruits could have more vitamins and minerals. |
| D．Seedless fruits could spread seeds to ensure survival of the species. |
| A．Seedless fruits existed due to human actions rather than nature. |
| B．Biting seeds of fruits can be helpful to your teeth more or less. |
| C．Seedless fruits have no difference from fruits with seeds in nutrition. |
| D．Many people choose seedless fruits after its presence at the market. |
| A．Uninterested | B．Positive | C．Negative | D．Cautious |
| A．Well, Seed Or Seedless, That Is a Question |
| B．Yes, Fruits with Seeds Always Win Your Heart |
| C．No, There's Nothing Wrong with Seedless Fruits |
| D．Surprise! A New Study Supports Fruits without Seeds |
9 . I’m a mother of three and a psychologist. Recently, I come to understand what makes childhood valuable in its own right.
One day, when I went to get my 7-year-old son from soccer
The traditional view of such a moment is that it is
| A．appointment | B．display | C．practice | D．experience |
| A．served | B．greeted | C．witnessed | D．treated |
| A．envied | B．criticized | C．promoted | D．forgiven |
| A．hanging | B．settling | C．putting | D．turning |
| A．shyness | B．weakness | C．loneliness | D．sadness |
| A．pick up | B．look for | C．stare at | D．bring out |
| A．ears | B．hands | C．mouth | D．face |
| A．biggest | B．simplest | C．strangest | D．dullest |
| A．eyes | B．arms | C．legs | D．feet |
| A．entertainment | B．delight | C．satisfaction | D．confusion |
| A．gather | B．play | C．sit | D．stay |
| A．practical | B．impossible | C．accessible | D．unnecessary |
| A．capacity | B．respect | C．effort | D．responsibility |
| A．experienced | B．absorbed | C．rich | D．skillful |
| A．seeking | B．studying | C．missing | D．denying |
10 . As a popular tour operator, Travel China Guide designs a lot of China tour packages (旅游套餐) for foreigners with the best-selling travel deals to wonderful must see destinations and offers the best quality services. We warmly invite you to join us on an exciting vacation. Today we will offer you a three days’ private Zhangjiajie in-depth tour.
Day 1 Arrival in Zhangjiajie
Welcome to this charming city, Zhangjiajie. Your guide and driver will pick you up at the airport and drive you to the hotel we booked for you ahead of time. The rest time of the day remains free for you to relax.
Day 2 Glass Bridge in Zhangjiajie
Today, your private Zhangjiajie tour will start with a visit to the Zhangjiajie Grand Canyon, where you will have a chance to experience the world’s longest and highest glass bridge, Zhangjiajie Glass Bridge. In addition to an unforgettable experience, it will also give you a special angle to enjoy the beauty of the Grand Valley
Afterwards, your guide will lead you to the Baofeng Lake where you will take a scenic boat ride. When you finish visiting the scenic area, the driver will send you back to the hotel.
Day 3 Away From Zhangjiajie
Today your Zhangjiajie tour will continue to go to the Tianmen Mountain, known as the most beautiful “Hanging Garden” in the world. Tianmen Mountain is named after a natural wonder, Tianmen Cave, which is a naturally formed hole among thousand-metre high cliffs. In addition to this wonder, you may also see different old trees, green vines and rare animals there.
Your three-day Zhangjiajie tour package will come to an end here. You will then be driven to the airport and we will say goodbye there. If you want to have your China tour schedule further, we will be glad to provide detailed information.
1. What will the visitors do on Day 1?| A．Book a hotel. | B．Drive to a hotel. |
| C．Start with a visit. | D．Spend time relaxing freely. |
| A．The Grand Valley. | B．The Baofeng Lake. |
| C．The Tianmen Mountain. | D．Zhangjiajie Glass Bridge. |
| A．It can book the hotel for free. |
| B．It offers no pick-up services. |
| C．It is designed for Chinese visitors. |
| D．It provides travelling services for foreign tourists. |
