1 . "While protected areas are generally designed to be safe havens, unchecked human pressures car have a negative impact," says zoologist Femke Broekhuis, lead author of a new study by the University of Oxford that has raised questions about levels of tourism in protected areas.
The study focused on female cheetahs（非洲猎豹）in the Maasai Mara National Reserve, Kenya. Cheetahs have babies of one to six, few of which make it to adulthood. The study claims that the already low cubs（幼崽）survival rate is made even worse by tourist pressure. It found that one or no cub survived to adulthood in areas with high levels of tourism, while an average of two survived in areas with low levels.
The higher death rate is likely to be caused by poor food supplies for the cubs. "Cheetahs, especially those with cubs, are a major tourist attraction and commonly attract large numbers of vehicles," says Broekhuis. "High tourist numbers have been found to negatively impact cheetah hunts and even if a hunt is successful, the presence of tourists can result in a cheetah abandoning its kill."
While Broekhuis is eager to stress the positive role of conservation, she also admits the results are worrying. Cheetah numbers are already being squeezed. Predation（掠夺）from lions as well as habitat reduction means the big cats have experienced sharp population decline. In fact, their numbers are thought to have halved in Kenya in the past 40 years to around 7,000. They have also disappeared from 91 percent of their historic range.
Researchers suggest stricter limits on the number of cars allowed near the animals. Growth rates for cheetahs inside the protected areas need to be high if they are to make up for declines outside of them.
1. What is the text mainly about?| A．Cheetah numbers halved. |
| B．Conservation has a positive effect， |
| C．Tourism reduced cheetah numbers, |
| D．Tourists are not allowed to get close to cheetahs. |
| A．Because the birth rate is low, |
| B．Because hunman hunt them cruelly. |
| C．Because their habitat is reduced. |
| D．Because they have poor food supplies. |
| A．Disappointed | B．Worried. |
| C．Satisfied. | D．Shocked. |
| A．Set more preserves. | B．Stop hunting cheetahs. |
| C．Give cheetahs more food. | D．Limit cars near cheetahs. |
A team of researchers at the University of California studied the effects of early exercise on adult physical activity, body mass and eating. They found that early-age exercise in mice has positive effects on adult levels of voluntary exercise in addition to reducing body mass.
“These results may have an effect on the importance of regular physical education in elementary and middle schools,” said Theodore Garland, a professor of biology, who led the research project. “If kids exercise regularly through their school years, then they may be more likely to exercise as adults, which could have far-reaching positive effects on human health and well-being.”
Although the positive effects of early-life exercise lasted for only one week, it is important to note that one week in the life of a mouse is the same as about nine months for humans. “Our results suggest that any positive effects of early-life exercise on adult exercise will need to be kept up if they are to be long-lasting.”
His team of researchers found, too, that all mice that had access to early exercise were lighter in weight than non-exercised mice.
Garland explained that, in general, exercise will stimulate appetite sooner or later. However, it is possible that certain types of exercise, done for certain periods of time or at certain light levels, might not stimulate appetite much, if at all, at least in some individuals.
“If we could understand what sorts of exercise these might be, then we might be able to tailor exercise recommendations in a way that would bring the benefits of exercise without increase in appetite, leading to a better chance of weight loss,” he said.
1. How long do the positive effects of early-life exercise last for a mouse?
| A．One day | B．One week |
| C．One month | D．Nine months |
| A．More study is needed to better understand the effects of different types of exercise. |
| B．Early-life exercise has life-long positive effects on people |
| C．Kids should be encouraged to do exercise as early as possible to ensure physical health. |
| D．The new study on mice mainly focused on how exercise affects appetite. |
| A．decline | B．improve | C．vary | D．harm |
| A．New ways to fight against being overweight. |
| B．The positive effects of mice. |
| C．The possible risks of doing exercise. |
| D．The positive effects of early- life exercise. |
3 . With fifteen years Britain and other nations should be well on with the building of huge industrial complexes for the recycling of waste. The word “rubbish” could lose its meaning because everything which goes into the dumps would be made into something useful. Even the most dangerous and unpleasant wastes would provide energy if nothing else.
The latest project is to take a city of around half a million inhabitants and discover exactly what raw materials go into it and what go out. The aim is to find out how much of these raw materials could be provided if a plant for recycling waste were built just outside the city. This plant would recycle not only metal such as steel, lead and copper, but also paper and rubber as well.
Another new project is being set up to discover the best ways of sorting and separating the rubbish. When this project is complete, the rubbish will be processed like this: First, it will pass through sharp metal bars (金属条) which will tear open the plastic bags in which rubbish is usually packed; then it will pass through a powerful fan to separate the lightest elements from the heavy solids; after that founders and rollers will break up everything that can be broken. Finally, the rubbish will pass under magnets (磁铁), which will remove the bits of iron and steel; the rubber and plastic will then be sorted out in the final stage.
The first full-scale giant recycling plants are perhaps fifteen years away. Indeed, with the growing cost of transporting rubbish to more distant dumps (垃圾场), some big cities will be forced to build their own recycling plants before long.
1. What is NOT mentioned as a part of the recycling process described in Paragraph 3?| A．Sharpening metal bars. |
| B．Sorting out small pieces of metal. |
| C．Breaking up whatever is breakable. |
| D．Separating light elements from the heavy ones. |
| A．To protect the environment. | B．To reduce transportation expense. |
| C．To get raw materials locally. | D．To get big profits from those plants. |
| A．Dangerous wastes can’t be recycled. |
| B．Recycling plant only recycle metal and paper. |
| C．Rubbish will be dealt with in a better way later. |
| D．The first full-scale giant recycling plants will begin operation in less than 15 years. |
| A．Scientific Ways to Get Energy | B．The Location of Recycling Plants |
| C．Some Methods to Protect the Environment | D．New Ways of Recycling Wastes |
4 . Marian Wright Edelman, an American lawyer, educator and children’s rights activist, was born on June 6, 1939 in South Carolina, one of five children. Her father Arthur Wright was a preacher (牧师) who died when she was only 14 years old. In his last words to her, he advised her not to “let anything get in the way of your education.”
After high school, Edelman went on to study at Spelman College and later traveled to the Soviet Union. When she returned to Spelman in 1959, Edelman became involved in the civil rights movement. This work inspired her to drop her plans to enter the Foreign Service and study law instead. In 1973, Edelman set up the Children’s Defense Fund as a voice for poor and disabled children. She served as a public speaker on behalf of these children.
During a tour, Marian met Peter Edelman, an assistant to Kennedy, and the next year she moved to Washington, D. C. to marry him and to work for social justice in the center of America’s political scene. The couple had three sons: Joshua, Jonah and Ezra. Jonah is the founder of Stand for Children, a group that promotes children’s education, and Ezra is a documentary (记录片) filmmaker who won an Emmy for his film “O.J.: Made in America.”
Edelman is the author of many books for children and adults. Her titles for readers include I’m Your child, God: Prayers for Our Children, Guide My Feet: Prayers and Meditations for Our Children, Lanterns: A Memoir of Mentors, and The Measure of Our Success: A Letter to My Children and Yours, which was a surprising success.
1. What do we know about Edelman’s family?| A．She was the single child. |
| B．Her mother was a preacher. |
| C．They took education seriously. |
| D．The family had a poor life. |
| A．She wanted to study abroad. |
| B．She intended to be a lawyer. |
| C．She had little time for her work. |
| D．She was interested in civil rights. |
| A．In Washington D. C. | B．In the Soviet Union. |
| C．In South Carolina. | D．In Spelman. |
| A．They all worked for social justice. |
| B．They achieved something in career. |
| C．They won many awards in their lives. |
| D．They contributed to their mother’s books. |
5 . After Stewart and Debbie Wilder lost their son, Cameron, in 2013, the last thing on their minds was decorating for the holiday season. “We haven’t put anything up in three years. It has all stayed boxed up,” said Debbie.
But in December 2016, the house was lit up for Christmas, with little lights cheerfully lining the rood and eaves(屋檐). It wasn’t the Wilders but a stranger Carson Zickgraf, the founder of CZ Enterprises LLC, who finally made the house shine. “I started crying,” Debbie says about seeing the lights for the first time. “It was really special.”
Zickgraf has been donating his light-stringing services to brighten the lives of families affected by losing their children, especially during the difficult holiday season since 2015 and has decorated the houses of more than two dozen families so far.
He started the project by chance. He was hanging lights on a home when the owner mentioned that some neighbors were having a hard time that holiday season because their son had recently died. Then he had an idea. “I sent my crew there to decorate that house too,” he says. The family was delighted. In fact, he had two friends who had died young, and he’d always wished he could ease the pain for their loved ones. Now, he’s found a way.
“There’s something special about Christmas lights. They warm the spirit.” Zickgraf knows his efforts can’t completely remove the pain from these families, but he can make the holidays a little cheerier. “I wish I had a bigger company so I could do more houses,” he says.
1. How was the Wilders affected by the loss of their son?| A．They didn’t feel like decorating their house for Christmas. |
| B．They were the last to put up some decorations at Christmas. |
| C．They had no one to help decorate their house for Christmas. |
| D．They had the belongings of their son boxed up at Christmas. |
| A．To make more houses brighter. | B．To expand his own business. |
| C．To relieve the victim family’s pain. | D．To memorize his dead friends. |
| A．Enthusiastic and optimistic. | B．Courageous and smart. |
| C．Ambitious and generous. | D．Considerate and helpful. |
| A．Lights warming the spirit | B．A person brightening houses |
| C．Families going through sufferings | D．A business hanging lights |
6 . Whenever I heard strangers singing out loud, whether it was in the supermarket or on the street, I used to think how annoying it was. That was until a few months ago.
Recently, my daughter Zoe started her second year of middle school with a new sense of awareness, asking me to fix the "little girl" pattern on her wheelchair seat. Not wanting her to stand out at school, I spent hours filling in pale yellow stars with a black marker, eager to erase whatever childish signs I could. Shortly after, Zoe got really sick and had to miss 20 days of school. This meant our days were filled with rushing between hospital appointments and meetings with the school, as we tried to make sure she didn't fall behind on her schoolwork.
I felt pulled back to a time when she was little and her sickness was a huge part of her life. Back then, it seemed like Zoe lived in hospitals, as she spent so much time in them. No matter how sick she got, however, she always had a positive attitude. But this was different: Zoe was no longer singing like she normally did. Zoe usually sings all the time, whether she's playing, riding in the car, or just doing her homework. There was no need for a radio in our house； Zoe provided the music for us. Consumed (被折磨)with my motherly worries, it was more concerning to me than her sickness.
One day, however, I heard her beautiful voice as I was cooking dinner. I stopped what I was doing and just smiled. “Pure delight. ’’ I thought to myself. Her voice slowly grew stronger, and soon, both the car and the house were filled with her music once more. How had I not noticed her singing had completely stopped, weeks and weeks ago? Now, thankfully, she's back in school, smiling and singing, and I'm thankful for each and every song she sings.
These days, whenever I hear a stranger singing a song to themselves, I don’t get mad. Instead, I smile, as I know that by singing out loud, they're simply sharing their happiness with the world.
1. When did the author feel bothered?| A．When hearing strangers singing. | B．When her daughter started middle school. |
| C．When fixing stars on the seat. | D．When her daughter became sensitive. |
| A．Considerate and helpful. | B．Competitive and hardworking. |
| C．Optimistic and strong-willed. | D．Self-aware and modest. |
| A．Zoe's love for music. | B．Zoe’s falling behind at school. |
| C．Zoe's silence during her sickness. | D．Zoe's slow recovery from her sickness. |
| A．A way to get rid of stress. | B．A way to express love to others. |
| C．A way to communicate with others. | D．A way to share joy. |
The expensive trip to church was a surprise for Richard Albert, who lives right on the Canadian border. Like the other half-dozen people of Township 15, crossing the border is a daily occurrence for Albert. The nearby Quebec village of St. Pamphile is where they shop, eat and go to church.
There are many such situations in these areas along the largely unguarded 5,530-mile border between Canada and the US-which in some cases actually runs down the middle of streets or through buildings.
As a result, Albert says he did not expect any problems three weeks ago when he returned home to the US after attending church in Canada, as usual. The US customs（海关）station in this are is closed on Sundays, so be just drove around the locked gate, as he had done every weekend since the gate appeared last May, following a tightening of border security. Two days later. Albert was told to go to the customs office, where an officer told him be had been caught on camera crossing the border illegally（非法）.
Ottawa has given out special passes to some 300 US citizens in that area so they can enter the country when Canadian customs stations are closed, but the US stopped a similar program last May. That forces the people to a 200-miledetour along hilly roads to get home through another border checkpoint.
Albert has requested that the customs office change their decisions on the fine, but he has not attended a Sunday church since. “I feel like I’m living in a prison,” he said.
1. We learn from the text that Richard Albert is .
| A．an American living in Township 15 |
| B．a Canadian living in a Quebec village |
| C．a Canadian working in a customs station |
| D．an American working in a Canadian church |
| A．failed to obey traffic rules | B．broke the American security rules |
| C．worked in St. Pamphile without a pass | D．damaged the gate of the customs office |
| A．a drive through the town | B．a race across the fields |
| C．a roundabout way of travelling | D．a journey in the mountain area |
| A．A Cross-country Trip | B．A Special Border Pass |
| C．An Unguarded Border | D．An Expensive Church Visit |
8 . On a rainy winter day, several decades ago, a British artist named Christopher got on a train in Oxford to go to London. When he began his journey, he never knew that it was the beginning of almost 40 years of accidents and near death experiences.
During the journey, the train fell into an icy river, killing 12 passengers. Christopher managed to swim back to the river bank. He only had a broken leg.
Two years later, Christopher was on a plane from London to Manchester when a door suddenly opened and he fell out. A few minutes later, the plane crashed; 27 people were killed. Christopher was so lucky that he landed in a haystack (干草堆).
A few years later, he was hit by a bus, but again had no serious injuries. Then a year after that, he was driving on a mountain road when he saw a truck coming straight at him. He drove the car off the road, jumped out, landed in a tree — and watched his car fall 100 meters down the mountain.
''There are two ways you can look at it, '' Christopher said. ''I'm either the worlds unluckiest man, or the world's luckiest. '' When a reporter asked Christopher what he thought, he chose the ''luckiest'' one.
Two years ago, aged 71, Christopher bought his first lottery ticket (彩票) in 50 years and won more than 2 million. After this, a TV company in America said they wanted him to make an advertisement. At first he accepted, but then he changed his mind. Christopher said he would not fly to Los Angeles for the filming, because he did not want to push his luck. Who knows? If he had accepted the invitation, maybe he would have had another accident. But Mr. Christopher is a lucky man. If he had had another accident, he probably would have survived that too!
1. What happened in the plane accident from London to Manchester?| A．Christopher fell out of the plane. |
| B．Christopher fell into an icy water. |
| C．Christopher landed in a tree. |
| D．Christopher was the only passenger to survive |
| A．worried | B．confused |
| C．doubtful | D．fortunate |
| A．Because he was not good at filming. |
| B．Because he had enough money. |
| C．Because he was sure of another accident. |
| D．Because he didn't want to risk his life. |
| A．A man with nine lives |
| B．The unluckiest man in the world |
| C．A man who traveled around the world |
| D．A man who earned ￡2 million in a lottery |
