1. What happened yesterday near Santa Barbara?
| A．There was another storm. | B．There was a traffic jam. | C．There was a fire. |
| A．On Tuesday. | B．On Wednesday. | C．On Thursday. |
| A．It will be more powerful. |
| B．It will move more quickly. |
| C．It will bring more rain and snow. |
1. What do the British like doing with birds according to the speaker?
| A．Eating them. | B．Watching them. | C．Hunting them. |
| A．They have increased their numbers. |
| B．They have allowed one type to take over. |
| C．They have changed their natural habits. |
| A．Gardeners. | B．Pet owners. | C．Nature lovers. |
1. What is the focus of the announcement?
| A．The warning of a natural disaster. |
| B．The place to buy food and drinks. |
| C．Some ways of entertainment at the hotel. |
| A．The beach. | B．The hotel rooms. | C．The underground floor. |
| A．Shoes. | B．Bags. | C．Food and water. |
| A．The government official. |
| B．The safety officer. |
| C．The hotel staff. |
4 . Canadians are blessed with an abundance of natural wonders with enough lakes, mountains and rivers to explore for a lifetime. We’ve also got some of the most amazing waterfalls on Earth.
Horseshoe Falls Niagara Falls, Ontario
Niagara Falls are the most famous waterfalls in Canada — and understandably so. Actually they are made up of three different falls, and the fittingly named Horseshoe Falls is the only one located on the Canadian side, which is the most powerful in North America. Multiple viewing options are available including tourist ships and sightseeing buses.
Nailicho (Nirginia Falls) Nahanni National Park Reserve, Northwest Territories
Coming in at twice the height of Niagara Falls, this massive waterfall is located on the South Nahanni River in the Northwest Territories. The remote location means it receives only about 1,000 visitors per year who must make their way by either boat or floatplane.
Takakkaw Falls — Yoho National Park, British Columbia
Takakkaw translated from Cree loosely means “the magnificent (壮丽的)”, and it’s a suitable word for the second-highest waterfall in Canada. After a steep drive up a winding road, Takakkaw Falls is only a short distance from the parking lot along a wheelchair accessible path.
Bridal Veil Falls — Bridal Veil Falls Provincial Park, British Columbia
Pretty and delicate, Bridal Veil Falls is located just east of Chilliwack, British Columbia, and really does look like its name, with water gently pouring over smooth rock. An easy 15-minute walk to the waterfall takes you through rich leaves. Tables are available to have a meal outdoors, and there are lots of opportunities for viewing wildlife along the way.
1. What do we know about Horseshoe Falls?| A．It is easily accessible. |
| B．It consists of three falls. |
| C．It limits tourist numbers. |
| D．It crosses North America. |
| A．By tourist ship. | B．By cable car. |
| C．By floatplane. | D．By car. |
| A．Swim. | B．Camp. | C．Picnic. | D．Hunt. |
1. What does the speaker mainly talk about?
| A．Must-see books. |
| B．Places to travel. |
| C．Important travel experiences. |
| A．The rock. | B．The islands. | C．The ancient city. |
| A．The coast. | B．Sand stones. | C．Its culture. |
| A．In the early morning. |
| B．At late night. |
| C．At noon. |
1. How much in total will be used in earthquake relief?
| A．£60 million. | B．£100 million. | C．£160 million. |
| A．By contacting the radio program. |
| B．By calling a charity organization. |
| C．By leaving personal information at a website. |
| A．To forecast the weather of this week. |
| B．To praise sponsors in the disaster relief. |
| C．To update information about the earthquake. |
7 . Since the first factories began manufacturing polyester (聚酯) in the 1950s, humans have produced about 9. 1 billion tons of plastic. And about 12 percent has been burnt, releasing harmful gases into the air. Most of the rest has ended up in landfills and in the natural environment. Plastic inhabits the oceans, cities and national parks, in large or tiny pieces.
Carbios is among the companies that are attempting to commercialize a type of chemical recycling, which breaks down polymers into their fundamental moleculars, called monomers (单体). Those monomers can then be recombined into polymers that are as good as new.
But some experts warn that chemical recycling may face many of the same issues that already plague the recycling industry, including competition from cheap plastics made from the raw materials. For the past several years, Carbios has been improving a method that uses an enzyme (酶) found in a microorganism to convert polyethylene terephthalate (PET), a common ingredient in plastic bottles, into its monomers.
Enzymatic recycling’s promise isn’t limited to PET: the approach can be applied to other plastics. In early experiments, it took weeks for enzymes to process just a part of a batch of PET. In 2020, Alain Marty, chief science officer at Carbios, announced they’d developed an enzyme that could stand warmer temperatures and change nearly an entire batch of PET into monomers in a matter of hours.
Most PET produced globally is used for textile fibers, which, because they often contain mixed materials, are rarely recycled. Mats Linder, leader of Stena Recycling in Sweden, said he’d like to see recycling technologies focus on these and other parts of the recycling industry where conventional recycling is coming up short.
As it happens, Carbios is working to do just that. Gregg Beckham, a senior research fellow at the National Renewable Energy Laboratory, believes the global plastic problem will call for a diverse mix of technological solutions. He thinks enzymatic recycling and other recycling technologies are advancing rapidly, and he’s optimistic that they’ll have a role to play.
1. What can be inferred from the first paragraph?| A．Polyester has been made for a century. | B．Most plastic is not recycled. |
| C．People should stop using plastic. | D．Most plastic is buried in landfills. |
| A．Trouble. | B．Inspire. | C．Influence. | D．Determine. |
| A．Many companies have been using this method. |
| B．Enzymatic recycling can only be used to break down PET. |
| C．It was Carbios that invented enzymatic recycling. |
| D．Great progress has been made in enzymatic recycling. |
| A．Enzymatic recycling is costly but effective. |
| B．Carbios is the pioneer in recycling plastic. |
| C．Enzymatic recycling has a bright future. |
| D．Chemical recycling technologies are limited. |
8 . England is relatively safe when it comes to animals and wildlife. There are no lions, elephants or tigers, or any dangerous spiders and deadly snakes. But there are a lot of cows.
No image of the British countryside would be completely without a cow. In fact, there are more than ten million of them in the U.K. With their sad beautiful eyes, their slow walk and harmless appearance are a key part of the landscape. But they do have another side of their character. And given that they can weigh more than 500kg, this can be a bit of a problem.
In recent weeks, there have been two attacks by cows. Two weeks ago, a cow attacked a policeman. He ended up with a black eye. In another attack, a doctor was hurt by cattle when she was walking with her two dogs. Health and Safety Executive figures show that 18 people have been killed and 481 have been injured by cows in the past eight years. “We hear one or two accidents each week, but these don’t usually involve serious injuries,” a spokesperson explained.
So what can you do if you face an angry cow? “The best advice is to keep calm and carry on,” an animal expert explained. If you find yourself in a field of cattle, move away as carefully and quietly as possible. And above all, keep dogs close. If the cows run toward you, let go of the dog—the cows are more interested in the dog than you.
So next time you go for a walk in the British countryside, watch out for cows, especially if you’re walking your dog.
1. The figures in Paragraph 3 show that cows’ attacks ________ .| A．frequently happen |
| B．bring about great changes |
| C．always cause serious injuries |
| D．attract a lot of media attention |
| A．Stand still. | B．Run away quickly. |
| C．Pull your dogs tightly. | D．Stay calm and walk away quietly. |
| A．They are not allowed in the British countryside. |
| B．They will prevent you from going out for a walk. |
| C．They should be guarded against attacking cows. |
| D．They can help you avoid being attacked by cows. |
| A．They are often sad. |
| B．They are often gentle |
| C．They are dangerous sometimes. |
| D．They are unimportant sometimes. |
This story happened in a small village in North America, where a disabled boy named Tom lived with his parents. When Tom was born, his right leg was a little twisted (变形的). When Tom could neither walk nor stand upright for two years, his parents took him to a doctor. After a careful examination, the doctor said complete recovery was impossible. So the doctor made a structure of iron rods (杆) that could be tied through Tom’s shoe to a belt over his knee. With the help of the structure, Tom could stand properly and walk at times, and his life became a little easier than before. But one thing always bothering him was that he could not play like other children, although he was still happy.
On the way to Tom’s school, there was a small flower shop. Its owner was a kind old man. In this shop, there lived his five small pet puppies. One of the puppies was lame (瘸的). It always dragged its leg and followed the rest of the puppies. Tom often stood in front of this flower shop after school and watched the puppies. Of the five, Tom liked that little lame puppy most.
One day, Tom saw a board hanging in front of the shop. It read “Puppies for Sale at $50” Tom went straight into the shop. Pointing at the lame puppy, he asked the old man to sell it to him. Tom took a $5 note out of his pocket and gave it to the old man. “I only have $5 now and you keep it. I’ll pay 50 cents a month for the rest,” Tom said. “But it is a puppy which will limp for the rest of its life. It will never be able to run with you or play with you in the park. Do you still want to buy it?” the old man asked in surprise.
Tom told the old man firmly, “Yes, I want this puppy.” Then the old man returned Tom’s $5 and said, “If you want this puppy, I’ll give it to you for free.”
Paragraph 1:
Tom got a little upset after hearing this from the old man.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Paragraph 2:
Then, Tom approached the lame puppy with his twisted right leg.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
10 . A method to transform a commonly thrown-away plastic to a resin (树脂) used in 3D- printing could allow for making better use of plastic waste.
A team of Washington State University researchers developed a simple and efficient way to transform polylactic acid(PLA), a bio-based plastic used in products such as plastic tableware and food packing to a high-quality resin. Yu-Chung Chang, a postdoctoral researcher on the work said they made stronger materials just straight out of waste, and they hoped that would provide people with the stimulation to upcycle this stuff instead of just throwing it away.
PLA is rarely recycled because like most plastics, when it’s melted down and reformed, it doesn’t perform as well as the original version and becomes less valuable.
“But once you look into it, it turns out that it can take up to 100 years for it to break down in a landfill,” Chang said. “In reality, it still creates a lot of pollution. We want to make sure that when we start producing PLA millions of tons, we will know how to deal with it. ”
In their study, the researchers developed a fast method to recycle PLA breaking the long chain of molecules (分子) down into simple monomers (单体)-the building blocks for many plastics. The entire chemical process can be done at mild temperatures in about two days. The chemical they used to break down PLA, aminoethanol, is also inexpensive.
“If you want to rebuild a Lego castle into a car, you have to take it apart brick by brick, Chang said. “That’s what we did.” Once PLA was broken down to its basic building blocks, the researchers rebuilt the plastic and created a type of liquid resin that is commonly used as printing “ink” for 3D printers. When used in a 3D printer and cured into plastic pieces the product was equal or better than commercially available resins.
The researchers have applied for a temporary patent and are working to further improve the process. They are also looking into other applications for the upncycling method.
1. What’s the main purpose of the researchers work?| A．To expand the use of 3D printing | B．To make better use of plastic waste. |
| C．To call on people not to throw away plastic. | D．To show off their high-technology methods. |
| A．The high-quality resin. | B．Polylactic acid. |
| C．The upcycling method. | D．Plastic food packing |
| A．To illustrate the process of remodeling | B．To explain how to deal with Lego bricks |
| C．To show the difficulties of their research. | D．To offer a model for the better improvement |
| A．The Inexpensive Chemical Used to Break Down the PLA |
| B．Newly-developed 3D Printer for More Plastic Applications |
| C．New Way Found to Turn Plastic Waste Into Valuable Products |
| D．The Upcoming Age of New Plastic Without Pollution to the Environment |
