The world's first hydrogen-powered trains have begun running in Germany. They began carrying passengers Monday in Germany's northern Lower Saxony state. The new train will run 100-kilometer trips and can travel up to 140 kilometers an hour.
A French railroad company called Alstom built the two trains. Team in Germany and France cooperated on the project, which was supported by the German government. The new train model ,called the Coradia ilint, signals the beginning of efforts in Germany and other nations to move away from pollution-producing diesel(柴油) trains.
The Coradia iLint is designed to run on non-electrified train lines with low levels of noise.
It uses a process that combines hydrogen and oxygen to produce electrical power. If the system produces more energy than the train needs at that time, it can store the extra energy in batteries. The only emissions (排放物) are water and steam.
A single tank of hydrogen can run a Coradia iLint train for about 1,000 kilometers. This is very similar to the distance a diesel-powered train can run on with a single tank.
Hydrogen-powered trains cost more than diesel trains to build. But Alstom officials say the operating costs are much lower. The company plans to provide another 14 Coradia iLint trains to Lower Saxony by 2021.
The head of railroad operations in the area, Carmen Schwab, praised replacing diesel trains with hydrogen. She said the move was an important first step in using clean-burning technologies to reach climate protection goals.
Officials say the area's many wind turbines (涡轮机)will produce part of the energy to create the hydrogen to power the trains.
Alstom says several other European countries have also expressed interest in developing hydrogen train systems. France has already said it wants its first hydrogen train to be operating by 2022.
1.Why did Germany build the new trains?
A. To replace diesel trains.
B. To carry more passengers.
C. To make traveling much easier.
D. To develop friendship with France.
2.What is one advantage of the Coradia iLint?
A. It runs without making any noise.
B. It doesn't use electrical power.
C. It costs much less to run.
D. It is cheaper to make it.
3.It can be concluded that hydrogen trains________.
A. are widely used
B. are environmentally friendly
C. can stop air pollution
D. can produce water and oxygen
4.What might be the best title for the text?
A. Saving Natural Resources
B. Efforts to Reduce Emissions
C. World's First Hydrogen Trains
D. A New Way to Make Electricity
Organic food is very popular. It is also expensive. Some organic food costs twice as much as non-organic food, but new parents and pet owners are willing to pay up to 200% more for organic food. However, there are people who think it is a waste of money.
There is one main difference between organic and non-organic food. Organic farms do not use agricultural chemicals, such as pesticides. In many countries organic foods have special labels. These guarantee that the products are natural.
Some people think organic means locally grown. Originally this was true. Over time organic farming became more difficult. The demand for organic food grew larger than the supply. Small companies had to sell out to large companies. There weren't enough organic ingredients, such as grain and cattle. This made it difficult for many organic companies to stay in business. Today, many large companies have an organic line of products.
Is organic food more nutritious? This is part of the debate. Many farmers and consumers believe it is. They think agricultural chemicals cause health problems such as cancer. Many health professionals disagree. Few studies prove that organic foods prevent health problems. Health specialists worry more about bacteria, such as E.coli and salmonella. These can get into contact with organic and non- organic food. Doctors recommend washing produce very carefully. Handling meat carefully is important too.
Most people agree that naturally grown food tastes better. Is tastier food worth the extra money? This is a matter of opinion. Whether it is healthier or not may require more research. However, organic consumers argue it is better to be safe than sorry.
1.What is probably the major concern of organic food consumers?
A.Price. B.Safety.
C.Freshness. D.Variety.
2.What is the doctors’ suggestion?
A.Grow your own food. B.Reduce the use of pesticides.
C.Make sure the food is clean. D.Buy large companies’ products.
3.Which of the following do most people agree on organic food?
A.It tastes better. B.It is easier to grow.
C.It contains more fat. D.It is more nutritious.
4.Where does this text probably come from?
A.A recipe book. B.A chemistry paper.
C.A medical report. D.A health magazine.
I watched my Dad close the door. It was a really cold night in dead silence and I was all alone at home. My parents left because they had been running fever for several days and they were showing other symptoms of COVID-19. It was the 9th day of Wuhan lockdown starting on January 23.
The virus we now know as COVID-19 is somehow fearsome partly because it does not discriminate (区别对待) in choosing who it infects. But that is only partly true. All the evidence suggest that it can be merciless to older people, so I was wondering whether my parents would make it and whether we would ever take family photos, which my parents and I had talked about during the Spring Festival holiday..
On their second day away my parents called and asked me how I was. We talked using FaceTime, and the moment I saw mom lying there with an oxygen mask and my dad could not talk without breathing heavily, I realized that I had to live on my own.
But two weeks later, I came across a fever and had to go into quarantine (隔离) and be put under medical observations for 14 days. Fortunately, my illness turned out to be due to a bacterial infections but not COVID-19.
Everything there was hectic, there seemed to be a shortage of medical staff and materials were in short supply. Even though the doctors and nurses were covered from head to toe, I could see how tired they were when I looked into their bloodshot eyes.
They would work a whole day preparing for new patients and seemed incredibly apologetic for not having everything that was needed. Most of the patients were really understanding, but of course there were those who were not, and complained loudly, but all the doctors and nurses tried their best to deal with it in a calming way. And they are all from other cities like Shanghai and Guangzhou, and some of them are just three or four years older than me.
When the quarantine was over, every patient effusively thanked the workers for what they had done, but the answer they received was exactly the same: “That’s what we’re here for.”
1.When did the author’s parents leave her for the hospital?
A.January 23. B.January 30.
C.January 31. D.February 1.
2.What does the underlined phrase “make it” in Paragraph 2 mean?
A.Succeed. B.Join in.
C.Arrive. D.Survive.
3.What can we learn according to the passage?
A.Both the author and her parents got infected with COVID-19.
B.The majority of the patients understood the doctors and nurses.
C.The patients apologized to the doctors and nurses because they were too tired.
D.The author didn’t get infected with COVID-19 because the virus can only infect the older.
4.What may the author think of the medical workers according to the passage?
A.Admirable. B.Outgoing.
C.Impatient. D.Thankful.
If you're looking to fully experience Africa's breathtaking scenery, and have an eye for adventure, then there's only one place to be. Here, inside Africa picks four of the best hikes from across the continent.
1.Kilimanjaro
Make it to the top of Tanzania's 5,895-meter Kilimanjaro, and you'll be standing at Africa's highest point. The mountain is Africa's most-visited hiking destination, attracting tens of thousands of tourists and adventures every year.
You don't have to a technical climber to climb Mount Kilimanjaro; you just need not be pretty physically fit. There are six routes to choose from difficulty, scenery and success. No special equipment
2.Atlas mountains
The High Atlas is an impressive mountainous range in central Morocco that hosts North Africa's highest peak. Mount Toubkal, at 4,165 meters. There's a variety of routes to follow during your climb but inexperienced climbers should note that the hike through the mountain's challenging zones is quite demanding.
3.Mount Kenya
A long-extinct volcano. Mount Kenya is Africa's second-highest peak, at 5,199 meters.
Lying just south of the equator, the mountain's deep valleys and diverse wildlife will guarantee you wonderful scenery and a fantastic hiking experience.
The climb, however, to the mountain's steep ice-capped peaks is quite challenging, making it the most technical, probably, in that East African area.
4.Mount Meru
Mount Meru may forever exist in the shadow of its neighbor, Kilimanjaro, but Tanzania's second-highest mountain (4,565 meters) has its own devotees.
It's less known, but Mount Meru is for the true enthusiast who wants to experience what very few people actually do.
Mount Meru is often used by mountaineers to accustom themselves before trying to conquer Kilimanjaro, or by those wanting a hike with the local Massai.
1.What do we know about Kilimanjaro?
A. It's comparatively easy to climb.
B. It's Africa's second highest mountain.
C. Its six routes are equally difficult.
D. It lies to the east of Tanzania.
2.Why do mountaineers climb Mount Meru first before they do Kilimanjaro?
A. To avoid big crowds of climbers. B. To hike with the local Massai.
C. To get used to the situation. D. To experience what most people do.
3.Which is the lowest of the four?
A. Kilimanjaro B. Atlas mountains
C. Mount Kenya D. Mount Meru
假定你是校学生会主席李华，上周你校组织一个文化交流团到英国某高中进行文化交流，现已回国。请你代表你校交流团给英国活动负责人David写一封信，内容包括：
1. 感谢对方的招待；
2. 此行的体验和收获；
3. 邀请对方暑假来中国体验中国文化。
注意：1.字数100左右，开头结尾已为你写好，不计入总词数；
2. 可以适当增加细节，以使行文连贯。
Dear David,
We have been back home safely from England.
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
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。错误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。
After school today, I took a walk in the park, depressing and down. I have made considerable efforts win the talent contest, but I only finished fourth. Just when I was crying, a boy in glasses walked by. He noticed me and came over. He played me a piece of Beethoven’s symphony with his mobile phone. Beside, he said Beethoven wrote it as his hearing grew worse. Hearing his word, I was no longer in tears. I came to realize that if we put all our efforts into that we loved, we could create great things no matter what obstacles were in the front of us. I was true thankful for their encouragement.
Yours,
Li Hua
