1. 表达问候；
2. 写信目的；
3. 期待回复。
注意：1. 词数100左右；
2. 可以适当增加细节，以使行文连贯。
2 . New research suggests that a gene that governs the body's biological (circadian) clock acts differently in males versus females and may protect females from heart disease. The study is the first to analyze circadian blood pressure rhythms (节奏) in female mice.
The body's circadian clock-the biological clock that organizes bodily activities over a 24-hour period-contributes to normal variations in blood pressure and heart function over the course of the day. In most healthy humans, blood pressure dips (下降) at night. People who do not experience this temporary drop, called “non-dippers”, are more likely to develop heart disease. The circadian clock is made up of four main proteins (encoded by “clock genes”) that regulate close to half of all genes in the body, including those important for blood pressure regulation.
Previous research has shown that male mice that are missing one of the four clock genes (PER1) become non-dippers and have a higher risk for heart and kidney disease. A research team studied the circadian response and blood pressure of female mice that lack PER1 and compared them with a healthy female control group. On both low-and high-salt diets, both groups “retained an apparent circadian rhythm” of blood pressure, the researchers explained. Unlike the male mice in previous research, the females without PER1 showed normal dips in blood pressure overnight.
These results suggest that the lack of PER1 acts differently in males and females. The findings are consistent with research showing that women are less likely to be non-dippers than men of the same age. "This study represents an important step in understanding sex differences in the regulation of cardiovascular (心血管) function by the circadian clock," the researchers wrote.
1. What does the new research find?| A．Biological clock may protect males from heart disease. |
| B．Biological blood pressure rhythms in female mice acts normally. |
| C．Biological clock organizes bodily activities over a 24-hour period. |
| D．A gene controlling biological clock works differently between sexes. |
| A．Helping males cure heart disease. |
| B．Helping blood pressure vary normally. |
| C．Contributing to abnormal variations in blood pressure. |
| D．Making up four main proteins regulating almost half of all genes. |
| A．treated. | B．warned. | C．kept. | D．watched. |
| A．One clock gene is important | B．Women may benefit from body clock |
| C．New study analyzes blood pressure rhythms | D．Blood pressure of healthy humans dips at night |
3 . Nowadays, countries are eager to get more electric cars on the road because moving away from gas-powered vehicles is vital to fighting climate change. China says that most new vehicles sold by 2035 will be electric. The United Kingdom will ban new gas-powered cars in 2030. One of the world’s major automakers, General Motors (GM), announced that it would stop selling gas-powered cars by 2035.
The key to an electric future is batteries. Automakers are racing to pack the most energy into the smallest one. The lithium-ion battery is what powers our mobile devices, which can be recharged again and again. Making these batteries has an environmental cost. Lithium is taken from the earth, like the oil used to make gasoline. But the long-term cost is much smaller. “Once you burn gasoline, you can’t recycle it,” says Jessika Trancik, a researcher at the Massachusetts Institute of Technology. “But when you use up a battery, you can still recycle the material.”
It’s up to governments to make electric cars accessible to everyone. National policies can help. In the United States, an electric Chevy Volt costs about $35,000. Trancik says charging stations must also be made widely available. As part of an effort to fight climate change, America plans to build half a million of them in the US by 2030. She hopes enough charging stations will be built soon. “It’s important to put chargers where many different people can have access to them,” she says. “Not just wealthier people.”
Last year, almost 5% of approximately 67 million new cars sold worldwide were electric. For Venkat Viswanathan, a professor of mechanical engineering at Carnegie Mellon University, green electricity is part of the solution to climate change, and electric cars are just the beginning. He sees a future of solar-powered homes and electric flying cars. “Soon, a plug-in vehicle might be as cheap as a gas-powered car. It is now abundantly clear that electric is the future,” he says. “It will be a totally new world.”
1. Which word best describes Trancik’s attitude to the lithium-ion battery?| A．Conservative. | B．Skeptical. | C．Positive. | D．Disapproving. |
| A．They should come down in price. | B．They may be unfairly laid out. |
| C．Enough of them have been built. | D．They favor more ordinary people. |
| A．Gas-powered cars will be cheaper. | B．Green electricity will be widely used. |
| C．The price of batteries will drop sharply. | D．Electric vehicles will beat climate change. |
| A．Charging Stations Are Needed | B．Vehicles Have Clean Options |
| C．Climate Change Fuels Electricity | D．Our Cars Are Going Electric |
4 . In a lot of other states in America, warm sunny days mean lazy afternoons are spent on the beach. In Oregon, people pack hiking shoes with their bathing suits. Here are 3 incredible hikes for you.
Cascade Head Preserve
Distance: 6.8 miles
Difficulty: Moderate
Nearest Town: Lincoln City
Managed by the international nonprofit The Nature Conservancy, the Cascade Head Preserve is an excellent hike that typically marks the division between the north and central Oregon coast. There are upper and lower trailheads (小道的起点), with about 3.4 miles of trails between the two.
Cape Lookout
Distance: 5 miles
Difficulty: Easy
Nearest Town: Tillamook
Of all the capes on the Oregon coast, Cape Lookout might be the most famous, projecting 1.5 miles into the ocean. Visitors can tackle the five-mile, round-trip hike to the tip of the cape where they can enjoy several incredible views over the Pacific Ocean. Separate trails lead down to South Beach and the Campground.
Clatsop Loop Hike
Distance: 3 miles
Difficulty: Easy
Nearest Town: Cannon Beach
There are several trails that traverse (横越) Tillamook Head at Ecola State Park, but the Clatsop Loop Hike is known for its breathtaking Cliffside views and quiet forested paths. Take the seaside trail from Indian Beach to the Hikers Camp, then take the forested path back.
1. Which is the dividing line between the north and central Oregon coast?| A．Tillamook. | B．Cascade Head Preserve. |
| C．Cape Lookout. | D．Cannon Beach. |
| A．Go camping in the wild. | B．Go hiking through the forests. |
| C．Kill time on the beach. | D．Enjoy views over the ocean. |
| A．The vast forest. | B．The easy hikes. |
| C．The amazing views. | D．The quiet seaside. |
5 . Wang Fang, a Suzhou native, has given her heart and soul to Kunqu Opera. Wang, who has twice won the Plum Performance Award — China’s top award for theater and opera performances-started to learn the traditional art form in 1977.
Born with a melodic voice, Wang loved to sing and dance when she was little. She performed frequently, and was recruited by the Suzhou Kunqu Opera Troupe (剧团) when she was in middle school. However, her parents refused the troupe’s invitation, insisting that she should concentrate on her studies and not drop out of school. After members of the troupe visited the parents repeatedly and showed great sincerity,Wang’s parents finally agreed.
Learning the traditional art form was never easy. She started to learn how to pronounce words, sing them lyrically and make gestures gently. As an actress playing martial artists roles at first, she had to spend extra time practicing kung fu movements. Years later, Wang used the word “unimaginable” to describe how hard the days were when she first learned Kunqu. She was soaked in sweat when practicing movements in summer, while in winter she often had chilblains (冻疮) on her hands when training in shabby classrooms with broken windows. “But I was young and determined at the time. No matter how difficult, I always got up early the next morning to practice,” Wang recalls.
Wang says she did not love Kunqu at first, but in her early 20s,when she watched the show Peony Pavilion performed by Zhang Jiqing, a master of the art form, it clicked. “I was shocked,” Wang says. “Her every movement was full of elegance and delicacy. Each of her lines and songs was perfect. I was overwhelmed by the beauty of Kunqu for the first time in my life, and it has stayed with me since.” Now, Wang has herself become a master of Kunqu. Her performances have impressed generations and helped to promote the art form among young people.
1. Why did Wang’s parents turn down the troupe’s invitation at first?| A．They didn’t think Wang had artistic talent. |
| B．They saw no future in learning Kunqu Opera. |
| C．They didn’t want Wang to ignore her studies. |
| D．They regarded members of the troupe as insincere. |
| A．Wang has made great efforts to learn Kunqu well. |
| B．Artists should be given more attention and care. |
| C．Traditional culture needs to be further promoted. |
| D．Wang has played a key role in the development of Kunqu. |
| A．Winning the Plum Performance Award. |
| B．Joining the Suzhou Kunqu Opera Troupe. |
| C．Watching Zhang’s masterly performance. |
| D．Being greatly admired by the audience. |
| A．It is never too late to learn. | B．Rome was not built in a day. |
| C．Doing is better than saying. | D．Don’t judge a book by its cover. |
6 . When you think of Chinese food in the US, fried rice, or General Tso’s chicken may first come to mind. But a new museum exhibition in New York City is trying to expand visitors’ palates (味蕾). It features stories of famous cooks like Martin Yan and home cooks whose food represents 18 different regional cooking styles of China.
“I think it’s unfair to just classify Chinese cooking as one,” says Kian Lam Kho, an organizer of “Sour, Sweet, Bitter, Spicy: Stories of Chinese Food and Identity in America” at the Museum of Chinese in America. “Even with the same dish or same cuisine, every family has a different variation.” That’s why the organizers say if you want to taste the full range of Chinese cuisine in the US, you’ll need to go beyond restaurants and into home kitchens, which can play a central role in many immigrants’ lives.
“The kitchen itself is kind of a comfort when you come to a new country. That’s the one place where you set up as your home base, and you cook things that you remember from your past,” explains Audra Ang, another organizer.
One of the home cooks showcased in the exhibition is Ni Biying, 80, of Manhattan. She worked as a live-in babysitter for years before she could finally afford to rent a home with her own kitchen. These days, you can usually find her moving around her one-bedroom apartment as a sweet smell of vinegar and rice wine floats from her stove. For Ni, a small dinner for friends and family means preparing almost a dozen different dishes. She learned some of her techniques from her father, who made most of her family’s meals when she was a child. “I still miss the beef with stir-fried celery my father used to cook,” she says. And it’s the kind of comfort food that defines Chinese food for Ni.
1. What is the new museum exhibition mainly about?| A．Cuisine of different countries. | B．Exploration of famous restaurants. |
| C．History of Chinese immigration. | D．Stories of Chinese food and cooks. |
| A．It provides a wealthy life. | B．It brings a sense of belonging. |
| C．It helps them to accept new cultures. | D．It enables them to forget the past. |
| A．She worked in a Chinese restaurant. |
| B．She made most meals as a child. |
| C．She learned cooking from her father. |
| D．She lives with a big family. |
| A．Cuisine Gains New Variations |
| B．Home Cooking Brings More to the Table |
| C．Immigrants Seek Their Fortune in the US |
| D．Chinese Restaurant Tells Immigrant Tales |
7 . On Feb. 23, student group Grassroots hosted its monthly clothing exchange. It is a
“One of the
Tynon told CT that the clothing exchange has been
Grassroots begins
Co-President of Grassroots Alan Rojas said the club not only
“The clothing exchange is
| A．free | B．commercial | C．meaningless | D．competitive |
| A．sell | B．make | C．donate | D．wash |
| A．strange | B．key | C．puzzling | D．crazy |
| A．bringing back | B．taking out | C．putting on | D．throwing away |
| A．style | B．record | C．purpose | D．thought |
| A．Otherwise | B．However | C．Therefore | D．Besides |
| A．brought | B．borrowed | C．purchased | D．priced |
| A．allowed | B．ordered | C．monitored | D．run |
| A．assessment | B．awareness | C．analysis | D．method |
| A．negative | B．temporary | C．significant | D．complex |
| A．difference | B．decision | C．mistake | D．profit |
| A．earn | B．speak | C．waste | D．participate |
| A．community | B．department | C．factory | D．company |
| A．skills | B．stories | C．clothes | D．notes |
| A．realizing | B．advertising | C．designing | D．evaluating |
| A．look into | B．rely on | C．take over | D．appeal for |
| A．requirement | B．activity | C．exhibition | D．standard |
| A．undoubtedly | B．generally | C．occasionally | D．initially |
| A．volunteers | B．scholars | C．students | D．neighbors |
| A．similar | B．common | C．clumsy | D．easy |
8 . Recently, Facebook has changed its corporate name to Meta. The company said it would better include what it does, as it broadens its reach beyond social media into areas like virtual reality (VR). The CEO Mark Zuckerberg said the existing brand could not possibly represent everything that they’re doing today, let alone in the future. He also revealed the company’s plans to build a “metaverse (元宇宙)” — an online world where people can game, work and communicate in a virtual environment.
The term “metaverse” was invented by author Neal Stephenson in Snow Crash, a science fiction published in 1992. In the work, the metaverse is a sort of 3D virtual world. It’s not simply a virtual reality game but is a persistent and shared virtual world. Or rather, the metaverse is a whole universe of shared virtual spaces seemingly linked together — you could, essentially, teleport (瞬移) between them.
Metaverse combined at the very least five technologies — they are social media, online game, Augmented Reality (AR), Virtual Reality (VR) and cryptocurrency (加密货币). Those technologies will bring users to an interactive world. AR and VR are vital for Metaverse. VR serves to present the virtual world visually and then AR will provide the audio and sensors for people to be able to interact. With Metaverse, Facebook will offer not only a texting service but also a multi-perspective virtual touch that feels like a real thing.
Facebook said that it plans to create 10,000 jobs in Europe over the next five years to work on metaverse-related endeavours (活动). The company also has introduced Oculus-branded virtual-reality headsets, and it joined with Ray-Ban to develop smart sunglasses that went on sale for $299. “Over time, I hope that we are seen as a metaverse company and I want to anchor our work and our identity on what we’re building towards,” Mark Zuckerberg said. “I view this work as critical to our mission because delivering a sense of presence — like you’re right there with another person — that’s the highest goal of online social experiences,” he said.
1. Why has Facebook changed its corporate name?| A．To lead the gaming industry. |
| B．To cover its extended business. |
| C．To improve its corporate image. |
| D．To attract investment for its new plans. |
| A．The introduction to the VR game. |
| B．The future with 3D virtual world. |
| C．The origin of the word “metaverse”. |
| D．The importance of the novel Snow Crash. |
| A．It has a wide range of applications. |
| B．It offers people deeply interactive experiences. |
| C．It enables people to enjoy a free texting service. |
| D．It uses the five technologies to explore the universe. |
| A．There will be fierce competition in the metaverse market. |
| B．Facebook will focus on designing virtual devices. |
| C．Metaverse will be the center of online experience studies. |
| D．Facebook will be devoted to developing the metaverse. |
9 . CHOOSE YOUR TRIP
Tour A—Dhaka Photography Tour
We design the Photography tour to offer you the best of Dhaka Photo Tour. Bangladesh Eco Adventure is specialized to offer photography tour in Dhaka and also outside of Dhaka. In Dhaka Photography tour we have included the lifestyle photography, general photography and many more.
Per Person(SUSD): 75 USD
Save This Month: $10 USD Per Person($USD)
Tour B—Manipuri Rash Mela Tour
It has a lot of interesting activities and the festival begins from local house yards where the little kids dressed like Krishna start dancing and collecting offerings. Afternoon in the open ground, people will gather and—make several temples by banana tree and dance around the temple. It’s the last daylight in the open air, so it looks fabulous. In the late evening in the central temple, beautifully dressed girls will start dancing in their traditional style.
Per Person($USD): 95 USD
Save This Month: $20 USD Per Person($USD)
Tour C—Sundarbans Tour with Small Boat
Sundarbans Mangrove forest is the single largest mangrove forest in the whole world located in the southwestern part of Bangladesh. The green vegetation gives a fresh feeling to your eyes and for bird lovers. About 270 types of birds have been recorded in Sundarbans which attracts bird watchers from around the globe.
Per Person($USD): 105 USD only
Save This Month: $50 USD Per Person($USD)
Tour D—Fullday Dhaka City Tour
Dhaka city tour is one of the most popular Bangladesh Eco Adventures. This tour includes a visit to all historical sites from Mugul period to our liberation war time, visiting museum, experiencing street life with a cup of tea, meeting locals and exploring locals markets, taking rickshaws in the old town and most importantly a boat tour in Burigonga river.
Per Person($USD): 85 USD
Save This Month: $15 USD Per Person($USD)
1. Which of the following. tours costs the least if you sign up this month?| A．Dhaka Photography Tour. | B．Manipuri Rash Mela Tour. |
| C．Fullday Dhaka City Tour. | D．Sundarbans Tour with Small Boat. |
| A．A middle-aged man crazy about nature. |
| B．A young couple loving traditional culture. |
| C．College students interested in photography. |
| D．A senior scholar keen on ancient architecture. |
| A．A text book. | B．A news report. |
| C．A shopping poster. | D．A travel brochure. |
Tigers are
According to Chinese folklore, tigers have the ability to keep off evil spirits,
In the Book of Rites, they were described as helpful. They would assist people in killing the animals that
Tigers also appear in much classic Chinese literature. In many legends, they are described as heroes,
Tigers are believed
