1 . Breath of Life
As Norwood drove through St. Petersburg, Florida, the laughter from the four teenage girls inside her car
Then smoke
But halfway down the street, she realized that her best friend, Simmons, wasn't with them. Norwood ran back and found Simmons stuck in the back
Soon, paramedics (医务人员) arrived and rushed Simmons to hospital. When she heard how Norwood had saved her life, “I wasn't
| A．increasingly | B．suddenly | C．frequently | D．cautiously |
| A．crashed | B．pulled | C．settled | D．fell |
| A．released | B．rose | C．cast | D．slid |
| A．speed up | B．run out | C．wear out | D．blow up |
| A．injure | B．free | C．care | D．control |
| A．liberty | B．rescue | C．life | D．target |
| A．seat | B．window | C．car | D．handle |
| A．moving | B．crying | C．breathing | D．praying |
| A．kicked | B．pushed | C．threw | D．pressed |
| A．ground | B．door | C．bed | D．tree |
| A．mouth | B．head | C．heart | D．shoulder |
| A．Bending | B．Lying | C．Kneeling | D．Standing |
| A．petting | B．squeezing | C．pumping | D．clicking |
| A．thought | B．method | C．struggle | D．kiss |
| A．touched | B．delighted | C．honored | D．shocked |
Lots of foreigners don’t understand why so many Chinese people are sorrowful about Yuan Longping’s passing away.
This reminds me
Western scholars’ prediction of China back then was indeed analyzing China’s problems, but they failed
If they had had any knowledge of Yuan who worked devotedly for our country, they wouldn’t have made such pessimistic evaluations. Why did the Chinese people make
3 . Having worked in the space station core module Tianhe for three months-the longest-ever human space mission in the Chinese history, three “taikonauts” of the Shenzhou-12 crew returned to Earth on Friday, hitting a new milestone in China's space exploration.
China's first self-developed space station, Tiangong, is independently constructed and operated by the country, demonstrating the country's breakthroughs in technologies concerning the astronauts' long-term stay and health care, recycling and life support system, supply of space materials and operations, as well as in-orbit maintenance.
As scheduled, the Tianzhou-3 cargo craft and the Shenzhou-13 manned spaceship will also be launched later this year todockwith the Tianhe module, and another trio of astronauts will stay in orbit for six months. For 2022, China is considering over a blitz of space missions, including the launch of the Wentian and Mengtian lab modules, two cargo spacecraft and two crewed spaceships, for the building of Tiangong, which is planned to be completed next year.
The two decades saw China launch seven manned spacecraft, two cargo spacecraft, Tiangong-1 experimental space lab and Tiangong-2 space lab, and send 12 astronauts into space, with the first “two steps” achieved, and the construction of Tiangong will mark a new peak of China's space technology.
The China Manned Space Agency has worked with the United Nations Office for Outer Space Affairs to invite UN members for scientific experiments aboard the Tiangong station. As the U.S. National Aeronautics and Space Administration(NASA)chief scientist for human exploration and operations Julie Robinson put it, “Increased scientific access to space is of scientific benefit globally, no matter who builds and operates platforms.”
There is no limit for the vast universe, nor for humanity's exploration endeavors. Tiangong, as a new outpost(前哨)in space and a platform for cooperation, will be China's gift and contribution to all humankind.
1. What's the name of the China's space station?| A．Tianhe. | B．Tiangong. | C．Shenzhou. | D．Tianzhou. |
| A．Help. | B．Work. | C．Deal. | D．Connect. |
| A．China failed to achieve the first “two steps”. |
| B．There are many Tiangong experimental space labs. |
| C．Chinese scientists are still making Tiangong completed. |
| D．12 astronauts and 9 cargo spacecraft have been sent into space. |
| A．A China's space station. |
| B．China advances closer to ‘space station times’. |
| C．The construction of Tiangong. |
| D．Shenzhou XII crew returns to Earth successfully. |
4 . Scientists at the Massachusetts Institute of Technology (麻省理工学院) have turned spider webs into music——creating an strange soundtrack that could help them better understand how the spiders output their complex creations and even how they communicate.
The MIT team worked with Berlin-based artist Tomas Saraceno to take 2D (two- dimensional) laser (激光) scans of a spider web, which were linked together and made into a mathematical model that could recreate the web in 3D in VR (virtual reality). They also worked with MIT’s music department to create the virtual instrument.
“Even though the web looks really random (随机)，there actually are a lot of inside structures and you can visualize (可视化) them and you can look at them, but it’s really hard to grasp for the human imagination or human brain to understand all these structural details,” said MIT engineering professor Markus Buehler, who presented the work on Monday at a virtual meeting of the American Chemical Society.
Listening to the music while moving through the VR spider web lets you see and hear these structural changes and gives a better idea of how spiders see the world, he told CNN. “Spiders use vibrations (振动) as a way to locate themselves, to communicate with other spiders and so the idea of thinking really like a spider would experience the world was something that was very important to us as spider material scientists,” Buehler said.
Spiders are able to build their webs without shelves or supports, so having a better idea of how they work could lead to the development of advanced new 3D printing techniques. “The reason why I did that is I wanted to be able to get information really from the spider world, which is very weird and mysterious,” Buehler explained. In addition to the scientific value, Buehler said the webs are musically interesting and that you can hear the sounds the spider creates during construction. “It’s unusual and eerie and scary, but finally beautiful.” he described.
1. What have MIT scientists done according to the passage?| A．They have translated spider webs into sounds. |
| B．They have made a mathematical model to produce webs. |
| C．They have created a soundtrack to catch spiders. |
| D．They have known how spiders communicate. |
| A．Their structures are beautiful and clear. |
| B．Professor Markus Buehler knows them well. |
| C．The American Chemical Society presents the result. |
| D．They are complex for people to figure it out. |
| A．virtual reality | B．printing |
| C．painting | D．film-making |
| A．It tells us that the music created by spiders is scary. |
| B．It shows how the researchers carry out the experiment. |
| C．It presents a new and creative way to study spiders. |
| D．It explains why scientists did the experiment. |
5 . Earth Hour is organized by the World Wide Fund for Nature. It's a big event usually at the end of March every year. On this evening, people “go dark”.
It's true that turning off lights for just one hour saves only a small amount of power.
But on another level, a large number of people’s acting together sends a powerful message to governments and companies.
The logo(标识) of Earth Hour is “60+” .The number 60 is for the 60 minutes of Earth Hour.
| A．But this is only the beginning. |
| B．Earth Hour represents every hour of every day. |
| C．After all, everyone has to answer for what they have done. |
| D．Besides turning off the lights, people get involved in other events. |
| E．It pushes them to take urgent measures by making changes to policies. |
| F．That is, they switch off all unnecessary lights at the same time for one hour. |
| G．The plus invites people to continue their action even after Earth Hour is finished. |
6 . Stress is all around us, but there are some ways we can manage our strew regardless of what comes our way .
How many times do we find ourselves doing something just for money? Don’t get me wrong — I like money as much as the next person. But if most everything we do revolves around how much money we might make, we will end up being miserable. I would suggest you do things because they are the right thing to do, or because it feels good to you. The money will follow.
By having options and the right intentions you reduce the possibility of a situation causing you stress.
| A．There are many lonely people out there. |
| B．You can also see how you can help others. |
| C．Actually, your stress will not melt away immediately. |
| D．How many times have you reached out a helping hand to others? |
| E．Some can be done individually, while others are best done in a group setting. |
| F．If you take this approach you will be a lot happier and healthier in the long run. |
| G．You would be surprised how much these people would appreciate such a simple act of kindness. |
7 . When Jason Esterhuizen was 23 in 2011, an accident blinded him. Now, eight years later, special glasses and a device (装置) inside his brain are allowing him to make out some details of the world around him.
In 2018, Jason moved from South Africa to California to join in a study that offered the possibility of helping him with his sight. Run by University of California and a company called Second Sight, the study aimed to lest an unusual medical product called Orion.
There are three important pieces to Orion. One part looks like a pair of glasses holding a camera on the person’s head, which also sends wireless signals .The second part is a tiny computer processing (处理) the video from the camera ― that’s where the sight comes from. The third part is a tiny device implanted (植入) directly into the patient’s brain, which is new and different about Orion.
For years, Second Sight and other companies have been working on ways to send visual information into the brains of blind people. Most of the efforts have focused on connecting to the retina (视网膜).By sending electrical signals to the retina, some visual information can be sent to the brain. So far Second Sight has given about 350 people retinal implants.
But a retinal implant wasn’t possible for Jason. That’s why Orion’s direct connection to the brain was especially interesting to him. Dr. Nader Pouratian, who gave Jason his implant, said, “With the system we’re testing now, you don’t even need to have eyes for the device to work.” Jason is one of the six trying out the Orion in the world.
Although Jason still can’t see normally, he can tell dark from light. He says he sees little white dots on a black background, like looking up at the stars at night. “Now I can do things that I couldn’t do before. It’s making my life much easier.”
1. What does the underlined words in the first paragraph mean?| A．ignore | B．understand |
| C．recognize | D．prove |
| A．Where our sight comes from. | B．How the product Orion works. |
| C．How people with glasses see. | D．What differences Orion has. |
| A．He was interested in Orion. | B．Orion is equipped for free. |
| C．He wanted to move to America. | D．Orion helps him recover some sight. |
| A．Orion is worn by the patient on the head. |
| B．Orion has been implanted in 350 people. |
| C．Orion brings simple sight to the blind. |
| D．Orion isn’t fit for patients without retinas. |
8 . One day, gardeners might not just hear the buzz of bees among their flowers, but the whirr of robots, too. Scientists have managed to turn an unassuming drone (无人机) into a remote-controlled pollinator (授粉媒介) by attaching horsehairs coated with a special, sticky gel to its underbelly.
Animal pollinators are needed for the reproduction of 90% of flowering plants and one third of human food crops. Chief among those are bees — but many bee populations in the United States have been in steep decline in recent decades. Thus, the decline of bees isn't just worrisome because it could disrupt ecosystems, but also because it could disrupt agriculture and economy. People have been trying to come up with replacement techniques, but none of them are especially effective yet.
Scientists have thought about using drones, but they haven't figured out how to make free-flying robot insects that can rely on their own power source without being attached to a wire. “It’s very tough work,” said senior author Eijiro Miyako, a chemist at the National Institute of Advanced Industrial Science and Technology. His particular contribution to the field involves a gel, one he’d considered a mistake 10 years before and stuck in a storage cabinet. When it was rediscovered a decade later, it hadn’t dried up or degraded at all. “I was so surprised because it still had high viscosity,” Miyako said.
The chemist noticed that when dropped, the gel absorbed an impressive amount of dust from the floor. Miyako realized this material could be very useful for picking up pollen (花粉). He and his colleagues chose a drone and attached horsehairs to its smooth surface to mimic a bee’s fuzzy body. They coated those horsehairs in the gel, and then controlled the drones over lilies, where they would pick up the pollen from one flower and then deposit the pollen at another one, thus fertilizing it.
The scientists looked at the hairs under a scanning electron microscope and counted up the pollen grains attached to the surface and found that the drones whose horsehairs had been coated with the gel had about 10 times more pollen than those that had not been coated with the gel.
Miyako does not think such drones would replace bees altogether, but could simply help bees with their pollinating duties. There’s a lot of work to be done before that's a reality, however. Small drones will need to become more controllable and energy efficient, as well as smarter, with better GPS and artificial intelligence.
1. What does the underlined word “viscosity” in Para.3 probably mean?| A．Hardness. | B．Stickiness. |
| C．Flexibility. | D．Purity. |
| A．bees disrupt both agriculture and economy |
| B．scientists have invented self-powered robot insects |
| C．bees in the United States are on the edge of extinction |
| D．Miyako found the special feature of the gel by chance |
| A．its body is made like a bee’s |
| B．its GPS works more efficiently |
| C．some flowers are coated with the gel |
| D．horsehairs with the gel are attached to it |
| A．are not yet ready for practical use |
| B．may eventually replace bees in the future |
| C．are much more efficient than bee pollinators |
| D．can provide a solution to economic depression |
