1.阅读理解

Recordings (录音) of angry bees are enough to send big, tough African elephants running away, a new study says. Beehives ( 蜂窝) either recorded or real may even prevent elephants from damaging farmer's crops.

Years ago, scientist Lucy King and her team found that elephants avoid certain trees with bees living in them. Today, Lucy wants to see if African honeybees might stop elephants from eating crops.

But before she asked farmers to set up beehives on their farms, she needed to find out if the bees would frighten elephants away.

Lucy found a wild beehive inside a tree in northern Kenya and set up a recorder. Then she threw a stone into the beehive, which burst into life. Lucy and her assistant hid in their car until the angry bees had calmed down. Next, Lucy searched out elephant families in Samburu National Reserve in northern Kenya and put a speaker in a tree close to each family.

From a distance, Lucy turned on the pre-recorded sound of angry bees while at the same time recording the elephants with a video camera. Half the elephant groups left the area within ten seconds. Out of a total of 17 groups, only one group didn't react to the sound of the angry bees. Lucy reported that all the young elephants immediately ran to their mothers to hide under them. When Lucy played the sound of a waterfall ( 瀑布) instead of the angry bees to many of the same elephant families, the animals were undisturbed. Even after four minutes, most of the groups stayed in one place.

Lucy is now studying whether the elephants will continue to avoid the sound of angry bees after hearing it several times. She hasn't tested enough groups yet to know and she has now begun placing speakers in the fields to see if elephants are frightened away.

(1) What can be the title of the passage? A. Bees are the King of the Forest B. How to Keep Elephants Away C. Don't Get Close to Angry Bees D. Angry Bees Frighten Big Elephants Away
(2) Why did Lucy throw a stone into a wild beehive? A. To record the sound of angry bees. B. To make a video of elephants. C. To see if elephants would run away. D. To find out more about the behavior of bees.
(3) Which of the following is TRUE according to the passage? A. Groups of elephants will make bees angry. B. Waterfalls can make elephants stay in one place. C. Elephants do not go near trees with bees living in them. D. Young elephants ignore African honeybees.
(4) According to the passage, Lucy       . A. works by herself in Africa B. needs to test more elephant groups C. has stopped elephants eating crops D. has got farmers to set up beehives on their farms
【考点】
主旨大意; 推理判断题; 细节理解题; 科普环保类; 说明文;
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1.阅读理解

A new study involving nearly 50, 000 people from four continents offers new insights into identifying the quantity of daily walking steps that will best improve adults' health and longevity (长寿), and whether the ideal number of steps differs across people of different ages. The study represents an effort to develop an evidence-based public health message about the benefits of physical activity. The often-repeated 10, 000-step-a-day saying grew out of a decades-old marketing activity for a Japanese pedometer(计步器), with no science to back it up. 

Led by physical activity professor Amanda Paluch, an international group of scientists conducted an experiment among adults aged 18 and older. They grouped the nearly 50. 000 participants into four comparative groups according to average steps per day. The lowest step group averaged 3. 500 steps; the second. 5, 800; the third. 7, 800; and the fourth, 10, 900 steps per day. Among the three higher active groups. there was a 40-53% lower risk of death. compared to the lowest step group. 

More specifically. for adults 60 and older. the risk of early death leveled off at about 6, 000-8, 000 steps per day. meaning that more steps than that provided no additional benefit for longevity. while for adults younger than 60. about 8, 000-10, 000 steps per day. 

"So, what we saw was this continuing reduction in risk as the number of steps increases. until it levels of. Interestingly. the study found no definitive association with walking speed. " Paluch says. 

The new study supports and expands findings from another study led by Paluch before. which found that walking at least 7, 000 steps a day reduced middle-aged people's risk of early death. "There's a lot of evidence suggesting that moving even a little more is beneficial. particularly for those who are doing very little activity. Paluch says. "More steps per day are better for your health. "

(1) Why did the scientists carry out the new study? A. To know about people's health condition. B. To explain the pedometer's working principles. C. To determine the best physical activity for people. D. To provide a scientific guideline on daily walking.
(2)  What does the underlined words "leveled off" in paragraph 3 mean? A. Turned higher. B. Became stable. C. Fell sharply. D. Changed rapidly.
(3)  What does the experiment find? A. The old should walk as much as possible. B. Young people usually walk more than the old. C. The most beneficial steps differ by age groups. D. Walking pace is the key to avoiding early death.
(4)  What does Paluch advise people doing little activity to do? A. To walk more steps. B. To control walking speed. C. To limit walking distance. D. To track the number of steps.
阅读理解 未知 普通
2. 阅读理解

I always have a dream:It's the end of the semester,and I suddenly realize that there is a lecture I missed. and now I have to sit for the final exam. I wake up panicked, my GPA in danger.How could I have done this? Why? Oh, my God! Then I remember I haven't been in college for more than a decade

My old schoolmates might argue that this nightmare scenario(场景)is not that far removed from my actual college experience, and that at certain times in my life, it did not take the magic of sleeping to find me completely unprepared tor a final. And, regardless of what may or may not be true of my academic accuracy, I suspect the school-stress dream is quite a common one.

My suspicion was confirmed by Deirdre Barrett, a dream researcher at Harvard University. She explained that these dreams tend to pop up when the dreamer is anxious in waking life. Particularly when evaluated by an authority figure. people who wanted to act or play music at an early age tend to experience anxiety dreams not about school, but about auditions(试镜)-that was where they interacted with the figures who could most easily crush them. In each of these dream scenarios , we revisit the space where we first experienced success or failure based on our performance.

To find out what my specified performance based anxiety dream means, I went to Jane Anderson, a dream analyst. Although science is undecided about the exact purpose of dreams,what night he behind "that dream scenario, being hack at school and having to take this final,she told me, is,"feeling tested in lie, feeling that you have to respond to other people's expectations, and feeling that you're not meeting those expectations.""So you think back to school. So much stuff happens in school that really sets your foundational beliefs and really sticks there in your unconscious mind. It can be very hard to let go of those beliefs," she said.

(1) Why is the author's dream mentioned in the first paragraph? A. To analyze reasons. B. To attract readers. C. To lead into the topic. D. To share the experience.
(2) Who is the least likely to have the performance-based anxiety dream? A. An actor discussed by the fans about his newly released movie. B. A worker examined by the employer for his work performance. C. An undergraduate evaluated by the professor for his graduation paper. D. A teacher assessed by the principal for his teaching achievements.
(3) What does Anderson say about the impact of school experiences on people's life? A. Various and gradual. B. Lasting and important. C. Positive but temporary. D. Negative but changeable.
(4) What does the text suggest about school-stress dreams? A. Special medical treatment is required to address the problem. B. More scientific research is needed to explore the real purpose. C. They may indicate difficulty or disappointment in real life. D. They only happen to those with negative school experiences.
阅读理解 未知 困难
3.阅读理解

Human beings are the greatest threat to the survival of endangered species through hunting, habitat destruction and the effects of climate change.

Read on to learn which beautiful creatures are most in need of our help, protection and conservation.

Amur Leopard

Since 1996, the amur leopard has been classified by the IUCN as Critically Endangered with less than 70 individuals thought to exist today. It is hunted and killed for its beautiful fur. Its habitat is being destroyed for human settlement and agricultural practices.

Gorillas

Cross River Gorillas and Mountain Gorillas are both classified as Critically Endangered and Endangered by the TUCN since 1996—that is two out of five gorilla subspecies. There are currently only 200—300 Cross River Gorillas left in the wild, and 900 Mountain Gorillas.

Sea turtles

Two types of sea turtles are amongst the most endangered species in the world: the Hawksbill Turtle and the Leatherback Turtle. In the past 100 years, the Hawksbill Turtle has lost 90 percent of its population, 80 percent of which has been lost in the past 10 years. As of 1996, the IUCN classified it as a Critically Endangered species. The Leatherback turtle is listed by the IUCN as Vulnerable, yet many subpopulations are facing extinction.

Orangutan

Since the millennium, the Sumatran Orangutan has been classified by the IUCN as Critically Endangered with approximately 80% of the population lost in the past 75 years mainly as a result of mass deforestation. This awful trend continues to put pressure on the remaining population of 6,600 Sumatran Orangutans that are estimated to remain on this Earth.

(1) Why do human beings hunt and kill the amur leopard? A. For its meat. B. For its fur. C. For its bones. D. For its teeth.
(2) What can we learn about sea turtles from the passage? A. They lose their lives due to lack of food. B. There are only 300 sea turtles left in the wild. C. They are the most endangered wildlife in the world. D. The number of sea turtles has dropped sharply recently.
(3) What's the main purpose of this text? A. To call on us to help and protect endangered animals. B. To encourage us to give much food to endangered animals. C. To advise us to stop eating endangered animals' meat. D. To show us the current life of endangered animals.
阅读理解 模拟题 普通