阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
On a clear February morning, a California black bear was set free. Looking around, he 1. (skillful) climbed the nearest tree. From high above the ground, he could see the hundreds of acres 2. were now his home. His eyes were filled with 3.(curious)
The bear had come a long way. Last fall, the seven-month-old bear bub(幼兽) was found all alone. He had no mother to care for him. He was thin, 4. (weight) only 20 pounds----about half the normal weight for a bear that age. Luckily the bub 5.(bring) to The Fund for Animals Wildlife Center in Ramona, California. At the center, the bub shared 6. outdoor enclosure(围栏) with another bear. There were trees to climb and places for them to dig dens(兽穴). 7.(teach) the cub to find his own food, people working at the center 8.(hide) fruit in tree branches. Soon, the bear was an expert at climbing trees and "picking" the fruit. All the staff felt 9.(amaze) at his adaptability.
Finally, the day had come. With his new skill and strong body, the bub was ready to be 10. his own, and ready to live like a bear should---in the wild.
I’m proud of myself for this kindness I did last night I did it ________ and did the right thing. However, I was unwilling to _______, because by sharing 1 am also sharing the ________ and more self-centered side of myself.
It was last night and I ________ my shift at work. It was late and I wanted to go straight home. On my way out of the door I ________ a fellow staff member and colleague. She doesn’t have a ________ and usually either catches a taxi home or _______ for an hour waiting for _______ staff member and friend of here to finish work.
In the past I’ve ________ to drive her home as she ________ on my side of town. But last night I really did not want to. I wanted to ________ straight home, alone. And I did not have to make “small talk”.
So I tried to ________ her, walking past her, heading down, and stealing out (偷溜) to the _______ without letting her see me and _______ without offering her a lift.
Yet, something in myself was stopping me. Something in myself made me ________ her and put myself in her shoes. She had young ________ who she wanted to go home to attend to and, she could go home right now _______ I took her, not an hour later when the other staff member and friend of hers who was taking her. So I offered.She_______. And of course, she was extremely ________.
Well, I learned a great ________ last night about not being so self-centered and selfish!
1.A. nervously B. proudly C. exactly D. carefully
2.A. share B. remark C. do D. consider
3.A. pleasure B. respect C. honour D. selfish
4.A. changed B. kept C. finished D. missed
5.A. noticed B. greeted C. followed D. helped
6.A. home B. choice C. friend D. car
7.A. hangs around B. hides away C. watches over D. calms down
8.A. each B. another C. either D. that
9.A. hated B. happened C. offered D. refused
10.A. works B. lives C. plays D. remains
11.A. fly B. ride C. drive D. walk
12.A. remind B. avoid C. attract D. please
13.A. workroom B. office C. playground D. park
14.A. therefore B. even C. however D. instead
15.A. rely on B. spy on C. look at D. point at
16.A. neighbors B. pets C. children D. friends
17.A. since B. although C. as D. if
18.A. accepted B. hesitated C. approached D. urged
19.A. reliable B. upset C. generous D. grateful
20.A. gift B. lesson C. treasure D. method
How to escape from a car in water
“If you get on your phone and call your parents or your sister, or 911,you will die, " says Robert May, a 21-year-old veteran （老兵）of the Indiana State. No one else will arrive in time: you have to save yourself.
Move quickly. Minivans (微型货车) might float for as long as 10 minutes. 1. In a study from the University of Manitoba, three passengers were able to exist with a child mannequin (人体模型) through a single driver-side window in just 3 seconds.
Unbuckle (揭开) your seatbelt, lower your window and climb out, ideally onto the roof of the vehicle. 2. Unfasten them from the backseat, pull them into the front and push them out of your window, oldest ones first. In May's experience, electric car windows will continue to work after falling into water. 3..
Don't open the door, water will flood in. Once full of water, the vehicle will sink fast. 4. Vehicle submersions (淹没) have one of the highest death rates of any type of single-motor-vehicle incidents, responsible for 400 deaths a year in North America.
After you get on top of your car, figure out if it makes sense to stay put or swim for dry ground. 5. Just get out first, May says.
A. From there, call for help.
B. You will be then totally out of danger.
C. Research has been done to confirm this.
D. If there are children present, attend to them first.
E. In one study, a 65-passanger bus sank in nine seconds.
F. Still, keep a small grass-breaking tool on your key ring, just in case.
G. However, the chances of survival are highest if you get out in the first 60 seconds.
It’s true that quite a few most respected scientific authorities have confirmed that the world is becoming hotter and hotter. There’s also strong evidence that humans are contributing to the warming. Countless recent reports have proved the same thing. For instance, a 2010 summary about the climate science by the Royal Society noted that: The global warming over the last half - century has been caused mainly by human activity.”
You may not believe that humans could change the planet’s climate, but the basic science is well understood. Each year, billions of tons of greenhouse gases are released into the atmosphere because of human activity. As has been known for years, these gases hold heat that would otherwise escape to space, wrapping the planet in an invisible blanket.
Of course, the earth’s climate has always been changing due to “natural” factors such as volcanic eruption or changes in solar, or cycles concerning the Earth’s going around the sun. According to the scientific research, however, the warming observed by now matches the pattern of warming we would expect from a build - up of greenhouse gas in the atmosphere - not the warming we would expect from other possible causes.
Even if scientists did discover another reasonable explanation for the warming recorded so far, that would give birth to a difficult question. As Robert Henson puts it: “If some newly discovered factor is to blame for the climate change, then why aren’t carbon dioxide and the other greenhouse gases producing the warming that basic physics tells us they should be?”
The only way to prove with 100% certainty that humans are responsible for global warming would be to run an experiment with two identical Earths-one with human influence and one without. That obviously isn’t possible, and so most scientists are careful not to state human influence as an absolute certainty.
1.The text is developed by ________.
A. giving typical examples
B. following the order of space
C. comparing and finding differences
D. analyzing a theory and arguing it
2.Which of the following is not the cause of climate change?
A. volcanic eruption
B. floods arid droughts
C. changes in solar
D. cycles concerning the Earth’s going around the sun
3.The underline word ‘‘identical” in the last paragraph probably means ________.
A. exactly the same B. totally different
C. extremely important D. partly independent
4.Which of the following can be the best title?
A. Are Humans Definitely Causing Global Warming?
B. Are All the Scientists Really Scientific?
C. Where Is Global Warming Leading Us to?
D. What’s the Relation of Global Warming and Greenhouse Gases?
Scientists have found living organisms trapped in crystals (晶体) that could be 50,000 years old.
The organisms were found in a hot, but beautiful cave system in Naica, Mexico. These ancient life forms can be seen only with a microscope. Penelope Boston, who leads the Astrobiology Institute at NASA, the space agency of the United States, says the ancient microbes were able to live by eating minerals such as iron.
She spoke about the discovery recently at a meeting of the American Association for the Advancement of Science. If the findings are confirmed, they will show how microbes can survive in extreme conditions. Forty different kinds of microbes and some viruses were found in the underground area. The genetic structures of these organisms are 10 percent different from those of their nearest relatives.
The caves in Naica are 800 kilometers deep. They were once used for mining lead. Before the miners began working in the caves, the area was separated from the surface and the outside world. Some of the caves are as big as the large religious centers built during Europe’s Middle Ages. There are crystals covering the walls. The caves are so hot that scientists must wear special clothing to keep cool. The clothing keeps the crystals safe from human germs (病菌) or other damage. Boston said the researchers could only work for about 20 minutes at a time before they had to go to a room that was 38 degrees Celsius to cool down.
NASA officials would not let Boston share her findings with scientific experts before last week’s announcement. So scientists could not say much about the findings. But Norine Noonan, a biologist with the University of South Florida, said she believed them. “Why are we surprised?”Noonan asked. “ As a biologist, I would say life on Earth is extremely tough and extremely colorful.”
Boston is also studying microbes commonly found inside caves in other countries, such as Ukraine and the United States. These microbes appear to be impossible to kill. Boston said they show how difficult life on Earth can be.
1.The existence of the ancient microbes relies on ________.
A. surrounding insects B. eating minerals
C. diverse plants D. absorbing air
2.What can we infer about the eaves in Naica from the passage?
A. The temperature in the caves is quite low.
B. The environment in the caves is difficult to adapt to.
C. The walls are covered by crystals.
D. The caves have been explored since they were formed.
3.What is the biologist Norine Noonan’s attitude towards the findings?
A. Neutral. B. Doubtful.
C. Positive. D. Indifferent.
4.What’s the main idea of the passage?
A. Living organisms bring hope to scientific research.
B. Caves provide living environment for living organisms.
C. Microbes show great power to survive in terrible conditions.
D. Scientists Discover 50,000-year-old “super life” in Mexico.
When Hai started college, he weighed over 250 pounds Healthy food choices were difficult for him, and he was emotionally distraught (忧心忡忡). However, when he left home for college, he was able for the first time to start taking his life and weight into his own hands.
He started by shopping at a local farmers’ market, an experience that inspired him profoundly. The idea that a farmer’s market represents local, sustainable, healthy food with a human connection where you can interact with the people that grow your produce was extremely appealing to him, and he began to think about the food that people at his university were eating. From what he saw at farmers’ markets, Hai realized that dining hall food was not “rear” food A lot of it is frozen or processed, and has unhealthy additives. His ideas continued to develop as he started taking classes about food sustainability at university, and after the summer of 2014 during which he cooperated with other students9 he launched into his senior year at the University of California full force with the Real Food Challenge (RFC) campaign, a project he co-founded that aims to reinvest university spending in food that is “real”: ecologically-sound, community-based, humane, and fair; as opposed to those traditional purchases with those unhealthy additives and processed products.
Not only has Hai started a movement of change across the university dining system, but he has also grown extremely as an individual，now with strong leadership abilities and great vision. In addition, after he started learning about food sustainability and taking action at university, Hai has lost over 100 pounds, and has been able to start enjoying activities such as backpacking and swimming that were not a possibility for him previously. He is confident instead of distraught now.
1.When did Hai get the idea of “rear” food?
A. When purchasing the locally-made food
B. When reforming the university dining system.
C. When reinvesting university spending in food.
D. When organizing the Real Food Challenge campaign.
2.What benefit has the campaign brought to Hai’s occupational development?
A. He has been hired by the university.
B. He has become an expert in food field
C. He has got excellent leading ability.
D. He has become much thinner than before.
3.According to Hai, “real” food is .
A. rich in nutrition B. made by experts
C. frozen or processed D. healthy without additives
