1 . As we all know, insects can be remarkably agile (灵活的) in flight. This is really hard to build into flying robots, but MIT Assistant Professor Kevin Yufeng Chen has developed an insect-sized drone (无人机) that approaches insects’ agility.
Typically, drones require wide open spaces. “If we look at most drones today, they’re usually quite big,” says Chen. “Most of their applications involve flying outdoors. The question is: Can you create an insect-sized drone that can move around in very crowded and complex spaces?”
According to Chen, he overcame many problems when building the drone. The insect-sized drone requires a fundamentally different construction from a larger one. The large drone is usually powered by a motor, but the motor loses efficiency as you shrink it. So, Chen says, “For an insect-sized drone, you need to look for alternatives.” The principal alternative until now has been employing a small, rigid actuator (执行器) built from new materials. Chen designed a more agile tiny drone using soft actuators instead of hard ones.
......
1. What can we know about the actuator designed by Chen?A.It weighs about six grams. |
B.It drives the insect-sized drone. |
C.It loses efficiency too much. |
D.It employs conventional materials. |
2 . Why is the library the highest building?
We sat down next to each other, but David wouldn’t look at me. Tapping him gently on the shoulder, I asked David what had caused him to decide to give up the opportunity.
Principles of Running
·Do the right amount.
·Keep running.
·Cool down properly.
① A warm-up gets your blood flowing and prepares your body before you exercise.
② Draw up a training plan that suits you. Make sure you are not running too much so that your heart, muscles and bones don’t get hurt.
③ A thirty-minute run will provide relief from aches or tension that you may be suffering due to stress.
④ Jog slowly for ten minutes after a long run, then walk for five minutes. Such kind of exercise relaxes your body.
⑤ There will be times when you want to give up. But hang in there and tell yourself that it will get easier with time.
A.①④⑤ | B.②④⑤ | C.②⑤④ | D.③⑤④ |
ENDURANCE
THE STORY OF ERNEST SHACKLETON, HERO OF THE ANTARCTIC
The story began in 1914, with an advertisement in a British newspaper: “Men wanted for a hazardous journey. Small wages. Bitter cold. Long months of complete darkness. Constant danger. Safe return doubtful.”
The man who had placed the advertisement was the explorer, Ernest Shackleton. He planned to cross Antarctica from the Weddell Sea to the Ross Sea via the South Pole, something no one had ever done before. More than 5,000 men applied to join the expedition. Only twenty-eight were chosen.
Shackleton’s ship, the Endurance, left England on 8 August 1914 and it reached the Weddell Sea in December, the Antarctic summer. But the weather was exceptionally bad and on 17 January 1915, the Endurance got stuck in ice. Unable to move, Shackleton and his men had to wait for eight months in complete darkness and freezing cold.
Finally spring came, but it brought disaster. As the ice melted, the ship broke in half. The crew had to abandon ship and camp on the ice for two months. When the Endurance finally sank on 21 November 1915, Shackleton and his men tried to survive by floating on the ice. Eventually the ice melted and Shackleton put his men into three small lifeboats and headed for the nearest land.
After five days at sea, they reached Elephant Island. The men were cold, exhausted, and weak from the journey and the lack of food. There was no chance of rescue in this remote place, so Shackleton decided to continue to South Georgia. He knew there was a Norwegian whaling station there, where he could get help, but it was a journey of 1,300 kilometres. Leaving the others on Elephant Island, Shackleton chose five men to accompany him to South Georgia in a tiny, seven-metre-long lifeboat.
After fifteen exhausting days with winds of sixty kilometres an hour and waves of up to fifteen metres high, they arrived in South Georgia. The weather was so bad that they couldn’t land for two days. Even when they landed, their journey wasn’t over. The whaling station was sixty kilometers away on the other side of the mountainous island. No one had ever crossed South Georgia on foot before.
The men marched continuously for 36 hours. They had no tent and could not stop to rest for more than a few minutes—if they fell asleep they would die of the cold. Starved and frozen, they finally reached the station.
On 30 August 1916, two years after the expedition began, they returned to Elephant Island in a small boat provided by the Chilean government. The other twenty-three men were still waiting. Miraculously, not one person had died.
Shackleton even returned to Antarctica. In 1921, he set out again to sail round the continent, but died during the journey in 1922. He was buried in South Georgia, remembered by history as a man who showed exceptional leadership and unbelievable endurance.
·Personal Touch
1. If you had the opportunity, would you try an expedition like the one led by Ernest Shackleton? Why or why not?
Digging In
·Comprehension
Answer the questions.
2. Who was Ernest Shackleton?
3. Why did Shackleton and his men have to wait for eight months in 1915?
4. How long did it take Shackleton and his men to finish the expedition?
5. How many people died during the expedition?
6. Fill in the blanks in the table.
Qualities of Ernest Shackleton | Facts |
A persistent explorer | •It took Shackleton and his men about four months to reach the Weddell Sea. •They got stuck in ice and waited for about •They abandoned ship and camped •It took them five days to reach Elephant Island. •It took them •They marched continuously for |
A(n) | •Shackleton found no chance of •He knew it was a journey of •He chose five men to |
A trustworthy man | •When Shackleton returned with his men in a boat provided by the Chilean government, the other twenty-three men were still waiting on Elephant Island. |
Answer the questions.
7. Why is Shackleton looked up to as a hero despite his failure to reach the South Pole?
8. Which proverb(s) below can be used to describe Shackleton’s adventures? Why?
A. Nothing ventured, nothing gained.
B. Better safe than sorry.
C. The early bird catches the worm.
D. Don’t cry over spilled milk.
E. No pain, no gain.
F. Actions speak louder than words.
My first and last time running a full marathon
It
The moment the starting gun went off, the empty road
The sun
In future, I will probably not have a second chance to run a full marathon, for I had lung surgery the following year and
We Regret to Inform You...
“We regret to inform you...” These are the words that every writer dreads receiving, but words every writer knows well. The response from a publisher comes back and the writer eagerly opens and reads it, their hearts sinking when they reach that final sentence. You may have spent years giving up your weekends and free time to write your life’s work, yet still this is often not enough. Everyone knows that success rarely happens overnight, but perhaps not many know that a lot of highly successful writers have previously faced rejection.
Take for example J. K. Rowling. When she received her first rejection letter, she decided that it meant she now had something in common with her favourite writers, and stuck it on her kitchen wall. Rowling had spent years surviving on little money, spending all her time writing. When she finally finished her first book, she received comments from publishers along the lines of “too difficult for children”, “too long”, “Children would not be interested in it”.Nevertheless, she persevered. “I wasn’t going to give up until every single publisher turned me down, but I often feared that would happen,” she later posted. After a total of twelve rejections, one publisher eventually agreed to print 500 copies of her first book, and as we know, Harry Potter became a global success, with over 400 million books sold and translated into more than seventy different languages.
All too often writers of great works have had to face criticism along with rejection. J. D. Salinger started writing short stories in high school, but later struggled to get his works published. “We feel that we don't know the central character well enough” was the criticism he received on his manuscript for The Catcher in the Rye. Despite rejections from several publishers, J. D. Salinger refused to give up. Even when serving in the US Army during the Second World War, he carried six chapters of The Catcher in the Rye with him and worked on the novel throughout his war service. When it was eventually published, the book became an immediate bestseller and went on to sell millions and millions of copies.
Perhaps the overall prize for perseverance should go to three sisters from Victorian England who dreamt of seeing their words in print. This, however, was a time when women were not encouraged to become writers. As the then Poet Laureate, Robert Southey, wrote to one of them:“Literature cannot be the business of a woman’s life, and it ought not to be.” Nevertheless, the sisters didn’t stop trying. Their response was to write a book of poems under male names. Even when the book sold only two copies, the sisters still didn’t give up. They started writing novels, and today Charlotte Brontë’s Jane Eyre, Emily Brontë’s Wuthering Heights and Anne Brontë’s Agnes Grey are regarded as classics of world literature. In fact, it is within the pages of Jane Eyre that we can find these words:“I honour endurance, perseverance, industry, talent; because these are the means by which men achieve great ends...”
So, it seems that talent alone isn’t enough to guarantee success. While a lot of hard work and a touch of luck play a part, perseverance is the key. Keep trying and eventually you will read the words “We are delighted to inform you...”
1. What’s mainly talked about in the passage?A.Many famous writers have many regrets. | B.Success depends on talent. |
C.Perseverance is the key to success. | D.Many famous writers have been treated unfairly. |
A.To advise us to be patient. | B.To show the writer’s attitude towards success. |
C.To introduce the following content. | D.To show the key to success. |
A.She knew many famous writers had previously faced rejections. |
B.She got frustrated by the first rejection letter and gave up. |
C.Her first book of Harry Potter was published at her first attempt. |
D.She revised her first book following the advice of publishers. |
A.He had faced many rejections before his novel was published. |
B.He once wanted to give up trying but later changed his mind. |
C.He worked on his novel when serving in the army. |
D.His novel was not popular when it was first published. |
A.Intelligent and considerate. | B.Talented and strongminded. |
C.Gentle and generous. | D.Wise and ambitious. |
7. 细读课文并找出心理描写的句子
(1)
(2)
SMART HOMES TO MAKE LIFE EASIER
Have you ever forgotten to lock the door of your house? Or, have you ever forgotten to switch off the TV or computer? These kinds of things happen to us all the time, waste resources, and can sometimes lead to problems. However, in the nottoodistant future, we will be living in smart homes that will lock the door for us when we are away and remember to switch off the TV when we forget. These smart homes will keep us secure, save us energy, and provide a more comfortable environment to live in.
Intelligent Controls
Today, we have to use switches for our lights, knobs for our appliances, and remote controls for our TVs and air conditioners. In the future, we will be using advanced technology every day for automatic control of just about everything in our home. The future home will use integrated sensors to tell when you leave home each morning, and then go into an energyefficient mode all by itself. You will no longer have to think about turning switches on and off yourself. Your home will also learn your daily routine and preferences, so everything will be ready for you when you get home each evening. Your lights will come on the instant you enter the door along with your favourite music or TV programmes, and you will find your dinner already prepared for you. All controls will respond to voice commands, so if you want to change your routine, you just say aloud what you want and the home system will obey.
Regular Health Checks
In addition, your smart home will be monitoring your health for you every day. Your bed, for example, will record how well you sleep every night. It will also be checking your body weight. If you start to have sleep or weight problems, it will send a warning to your phone. It will also give you suggestions on a healthier diet and how to sleep better. Smart toilets will be keeping constant track of your health as well. They can warn you early on if there is something abnormal or if you have a critical illness, such as cancer, and potentially save your life.
No More Disasters
Smart homes will be able to prevent serious damage from accidents. For example, if a water pipe starts leaking, or if there is a short in the electrical wiring, your smart home will detect it and provide you with the relevant information. This way, you will be able to fix the problem before your home becomes flooded or catches fire.
This smart technology is not a fantasy. Many of these new innovations are already available and being used in some homes. In this sense, the home of tomorrow is already the home of today. Nevertheless, it will take some years before most new homes begin to use this new technology.
1. Match the main idea with each paragraph.A.Smart homes will check people’s health regularly. B.Smart homes will prevent serious damage from accidents. C.Intelligent controls in the home system. D.Smart technology will be used widely in the future. E.Smart homes will bring us safe, energysaving and comfortable life in the future. |
2. What’s the main idea of the text?
A.Smart homes will focus on people’s health issues. |
B.Smart homes are a new but controversial technology. |
C.Smart homes will make our life easier in many ways. |
D.Smart homes will make human beings lazy. |
A.Sleeping too fast. |
B.Waking all the night. |
C.Worrying about nothing. |
D.Stopping being stolen. |
A.Some of the new technology has been used. |
B.Smart homes have been spread widely now. |
C.No one likes to have a smart home today. |
D.Smart homes will be built in China soon. |
A.To sell integrated sensors. |
B.To change the old houses. |
C.To decorate home with smart technology. |
D.To give us an insight into smart homes. |
A.Adults. | B.Scientists. |
C.Predictors. | D.Home owners. |
(1)
(2)
(3)
(4)
(5)
(6)
(7)
A.refer | B.factor | C.carve | D.variety |
A.native | B.attitude | C.gas | D.character |
A.major | B.bought | C.talk | D.law |
A.subway | B.tongue | C.struggle | D.regard |
A.point | B.Christmas | C.dialect | D.apartment |