We are the products of evolution,and not just evolution that occurred billions of years ago.As scientists look deeper into our genes(基因),they are finding examples of human evolution in just the past few thousand years. People in Ethiopian highlands have adapted to living at high altitudes. Cattle﹣raising people in East Africa and northern Europe have gained a mutation (突变)that helps them digest milk as adults.
On Thursday in an article published in Cell,a team of researchers reported a new kind of adaptation ﹣ not to air or to food,but to the ocean.A group of sea﹣dwelling people in Southeast Asia have evolved into better divers.The Bajau,as these people are known,number in the hundreds of thousands in Indonesia,Malaysia and the Philippines.They have traditionally lived on houseboats;in recent times,they've also built houses on stilts(支柱)in coastal waters."They are simply a stranger to the land," said Rodney C.Jubilado,a University of Hawaii researcher who studies the Bajau.
Dr.Jubilado first met the Bajau while growing up on Samal Island in the Philippines.They made a living as divers,spearfishing or harvesting shellfish. "We were so amazed that they could stay underwater much longer than us local islanders," Dr.Jubilado said."I could see them actually walking under the sea."
In 2015,Melissa Ilardo,then a graduate student in genetics at the University of Copenhagen,heard about the Bajau.She wondered if centuries of diving could have led to the evolution of physical characteristics that made the task easier for them."It seemed like the perfect chance for natural selection to act on a population," said Dr.Ilardo.She also said there were likely a number of other genes that help the Bajau dive.
(1)What does the author want to tell us by the examples in paragraph 1?
A. |
Environmental adaptation of cattle raisers. |
B. |
New knowledge of human evolution. |
C. |
Recent findings of human origin. |
D. |
Significance of food selection. |
(2)Where do the Bajau build their houses?
A. |
In valleys. |
B. |
Near rivers. |
C. |
On the beach. |
D. |
Off the coast. |
(3)Why was the young Jubilado astonished at the Bajau?
A. |
They could walk on stilts all day. |
B. |
They had a superb way of fishing. |
C. |
They could stay long underwater. |
D. |
They lived on both land and water. |
(4)What can be a suitable title for the text?
A. |
Bodies Remodeled for a Life at Sea |
B. |
Highlanders' Survival Skills |
C. |
Basic Methods of Genetic Research |
D. |
The World's Best Divers |
I don’t ever want to talk about being a woman scientist again. There was a time in my life when people asked constantly for stories about what it’s like to work in a field dominated by men. I was never very good at telling those stories because truthfully I never found them interesting. What I do find interesting is the origin of the universe, the shape of space-time and the nature of black holes.
At 19, when I began studying astrophysics, it did not bother me in the least to be the only woman in the classroom. But while earning my Ph.D. at MIT and then as a post-doctor doing space research, the issue started to bother me. My every achievement—jobs, research papers, awards—was viewed through the lens of gender (性别) politics. So were my failures. Sometimes, when I was pushed into an argument on left brain versus (相对于) right brain, or nature versus nurture (培育), I would instantly fight fiercely on my behalf and all womankind.
Then one day a few years ago, out of my mouth came a sentence that would eventually become my reply to any and all provocations: I don’t talk about that anymore. It took me 10 years to get back the confidence I had at 19 and to realize that I didn’t want to deal with gender issues. Why should curing sexism be yet another terrible burden on every female scientist? After all, I don’t study sociology or political theory.
Today I research and teach at Barnard, a women’s college in New York City. Recently, someone asked me how many of the 45 students in my class were women. You cannot imagine my satisfaction at being able to answer, 45. I know some of my students worry how they will manage their scientific research and a desire for children. And I don’t dismiss those concerns. Still, I don’t tell them “war” stories. Instead, I have given them this: the visual of their physics professor heavily pregnant doing physics experiments. And in turn they have given me the image of 45 women driven by a love of science. And that’s a sight worth talking about.Why doesn’t the author want to talk about being a woman scientist again?
A.She feels unhappy working in male-dominated fields. |
B.She is fed up with the issue of gender discrimination. |
C.She is not good at telling stories of the kind. |
D.She finds space research more important |
From Paragraph 2, we can infer that people would owe the author’s failures to _____.
A.the very fact that she is a woman |
B.her involvement in gender politics |
C.her over-confidence as a female astrophysicist |
D.the burden she bears in a male-dominated society |
Why does the author feel great satisfaction when talking about her class?
A.Female students no longer have to bother about gender issues. |
B.Her students’ performance has brought back her confidence. |
C.Her female students can do just as well as male students. |
D.More female students are pursuing science than before. |
What does the image the author presents to her students suggest?
A.Women students needn’t have the concerns of her generation. |
B.Women have more barriers on their way to academic success. |
C.Women can balance a career in science and having a family. |
D.Women now have fewer problems pursuing a science career. |
The simple exercise of sitting down and standing up again without holding onto anything, could suggest how long you have to live. This is the belief of a group of physicians, who came up with the ‘sitting-rising test’ to measure their patients’ flexibility and strength. They developed a scoring system for the test and found that people who scored three points or less out of 10, were more than five times as likely to die within six years, as those who scored more than eight points.
Claudio Gil Araujo, of Gama Filho University in Rio de Janeiro, Brazil, was among the doctors who originally developed the sitting rising test (SRT) to quickly assess the flexibility of athletes, but he now uses it to persuade his patients that they need to stay active to maintain their muscle and balance, and live longer, Discover Magazine reported.
As we age, our muscles tend to become weaker and a loss of balance means we are increasingly likely to fall. Current ways to test frailty can be time-consuming, impractical and inaccurate for small doctors’ surgeries, but experts are keen to keep older people moving. Dr Araujo says that anyone can take the SRT because no equipment is needed.
In a study, published in the European Journal of Cardiology, the researchers described how 2002 adults aged between 51 and 80 took the SRT at Clinimex Exercise Medicine Clinic in Rio. They found that patients who scored fewer than eight points out of 10 on the test, were twice as likely to die within the next six years, compared with people with more perfect scores.
One point was deducted each time a person used their hand or knee for support to either sit down or stand up, while half a point was deducted for losing their balance. The experts found that people who scored three points or fewer, were more than five times as likely to die within the same period. They wrote in the study: ‘Musculoskeletal fitness, as assessed by SRT, was a significant predictor of mortality in 51–80-year-old subjects.’ The study found that every point increase in the test, was linked to a 21 per cent decrease in mortality from all causes. However, chartered physio-therapist Sammy Margo said that the exercise may be “quite ambitious” for older people in the UK.The sitting-rising test was first designed ______.
A.to suggest how long you have to live. |
B.to assess the flexibility of athletes. |
C.to measure their patients’ flexibility and strength. |
D.to persuade his patients that they need to stay active to maintain their muscle and balance. |
What does the underlined word “mortality” probably mean in this passage?
A.body balance | B.muscle strength |
C.flexibility | D.length of one’s life |
What would the author most likely to talk about in the following paragraph?
A.The reason why the test may not be accurate to British older people. |
B.Another test that is more appropriate in some other cultures. |
C.The different test results among old men and women. |
D.The limitation and disadvantage of the sitting-rising test. |
Which part of the newspaper will the article probably come from?
A.Exercise & sports | B.Education |
C.Entertainment | D.Health |
One morning a few years ago, Harvard President Neil Rudenstine overslept. For this busy man, it was a sort of alarm: after years of non-stop hard work, he might wear himself out and die an early death.
Only after a week’s leave—— during which he read novels, listened to music and walked with his wife on a beach—— was Rudenstine able to return to work.
In our modern life, we have lost the rhythm between action and rest. Amazingly, within this world there is a universal but silly saying: “I am so busy.”
We say this to one another as if our tireless efforts were a talent by nature and an ability to successfully deal with stress. The busier we are, the more important we seem to ourselves and, we imagine, to others. To be unavailable to our friends and family, and to be unable to find time to relax—— this has become the model of a successful life.
Because we do not rest, we lose our way. We miss the guide telling us where to go, the food providing us with strength, the quiet giving us wisdom.
How have we allowed this to happen? I believe it is this: we have forgotten the Sabbath, the day of the week—— for followers of some religions—— for rest and praying. It is a day when we are not supposed to work, a time when we devote ourselves to enjoying and celebrating what is beautiful. It is a good time to bless our children and loved ones, give thanks, share meals, walk and sleep. It is a time for us to take a rest, to put our work aside, trusting that there are larger forces at work taking care of the world.
Rest is a spiritual and biological need; however, in our strong ambition to be successful and care for our many responsibilities, we may feel terribly guilty when we take time to rest. The Sabbath gives us permission to stop work. In fact, “Remember the Sabbath” is more than simply permission to rest; it is a rule to obey and a principle to follow.The “alarm” in the first paragraph refers to “_______”.
A.a signal of stress | B.a warning of danger |
C.a sign of age | D.a spread of disease |
According to Paragraph 4, a successful person is one who is believed to _______.
A.be able to work without stress |
B.be more talented than other people |
C.be more important than anyone else |
D.be busying working without time to rest |
Some people feel guilty when taking time to rest because they _______.
A.think that taking a rest means lacking ambitions |
B.fail to realize that rest is an essential part of life |
C.fail to realize that religions force them to rest |
D.think that taking a rest means being lazy. |
What is the main idea of this passage?
A.We should balance work with rest. |
B.The Sabbath gives us permission to rest. |
C.It is silly for anyone to say “I am busy.” |
D.We should be available to our family and friends. |
Golden sunlight danced in the treetops, and children’s laughter filled the park. The smell of popcorn played on the breeze, and life seemed good. It was one of the happiest Saturday mornings I had spent with my little daughter, Gigi.
That was, until two strangers threw her into their car and sped away. It seemed like a bad dream. I could barely whisper when the police questioned me. For hours we waited, but there wasn’t any news.
“Go home, Ma’am,” the police officer said. “We’ll monitor your telephone. Trust me, we’ll find her.” After what had just happened, it was hard for me to trust anything.
My friend Gloria came over that afternoon. “I heard about Gigi on the radio. Everyone is looking for the car. The interstates are all blocked.” She took my hand and said, “Look here. I want you to have this picture and pray with me.”
It was a picture of a little girl sound asleep in her bed. Standing by the bed was a tall, blond angel. His hand was touching the girl’s shoulder as he smiled down at her.
“I’m too exhausted for any hocus-pocus right now, Gloria! I want my daughter home!” I screamed, and then began sobbing. Gloria placed the photo on our desk and knelt down beside me. “Just pray with me,” she said, holding my hand.
I had no strength left, so we prayed and waited what seemed an eternity. But the phone never rang.
Suddenly, the front door swung open. There stood Gigi. “Gigi! Thank God!” I cried, throwing my arms around her, “Where did those men take you? How did you get home? Did the police find you?”
“No Mommy!” said Gigi. “I was really scared because those men said they were taking me far away. We were going really fast. But then a tall man walked out in front of the car, and they ran off the road and hit a tree.” Then the tall man ran up and opened the car door and pulled me out. He was really nice, and said I would be okay now. He must have brought me home because then I woke up here in front of our house.”
“But who... how did he know... where to bring you?” My voice broke and trailed to a whisper.
“I don’t know, Mommy,” Gigi said.
Just then Gigi noticed Gloria’s picture on the desk. “That’s him!” She gave a loud cry, pointing at the picture. “That’s him! Except he didn’t have wings, and he was wearing blue jeans and a T-shirt. But that’s him exactly. I’d remember him anywhere!”
Later that night, the police found the injured kidnappers. When questioned, the driver remembered making a sharp turn to avoid hitting a tall blond man.
Twenty years have gone by. Nobody claims to have rescued Gigi and there have been no logical explanations for Gigi’s miraculous escape.
There have always been things that people can’t explain. But, from that day forward, I believe that all experiences, positive and negative, are given to us for our strengthening and learning.
Gigi keeps Gloria’s picture on her desk, and she remembers her angelic friend. And, like my daughter, I have a faith that has carried me through many trials since that day many years ago.The writer describes a happy scene at the beginning of the passage to ___.
A.introduce a topic |
B.attract readers’ attention |
C.show the beauty of nature |
D.make a sharp contrast |
What is the writer’s attitude towards the pray together with Gloria?
A.Curious | B.Grateful |
C.Doubtful | D.Causal |
The main reason why the kidnappers could be arrested was that _____.
A.the police followed and caught them |
B.Gloria’s best friend helped the police to find them |
C.an angel spotted them and took them to the police station |
D.they had an accident when a tall man tried to stop their car |
What can be best title for the passage?
A.picture of an angle | B.power of God |
C.Gigi’s escape | D.Mommy’s anxiety. |
I travel a lot, and I find out different “styles”(风格)of directions every time I ask “ How can I get to the post office?”
Foreign tourists are often confused(困惑的)in Japan because most streets there don’t have names. In Japan, people use landmarks(地标)in their directions instead of street names. For example, the Japanese will say to travelers, “ Go straight down to the corner. Turn left at the big hotel and go past a fruit market. The post office is across from the bus stop.”
In the countryside of the American Midwest, there are not usually many landmarks. There are no mountains, so the land is very flat. In many places there are no towns or buildings within miles. Instead of landmarks, people will tell you directions and distances. In Kansas or Iowa, for example, people will say, “ Go north two miles. Turn east, and then go another mile.
People in Los Angeles, California, have no idea of distance on the map. They measure distance in time, not miles. “ How far away is the post office?” you ask. “ Oh,” they answer, “ it’s about five minutes from here.” You say, “ Yes, but how many miles is it?” They don’t know.
It’s true that a person doesn’t know the answer to your question sometimes. What happens in such a situation? A New Yorker might say, “ Sorry, I have no idea.” But in Yucatan, Mexico, no one answers “ I don’t know”. People in Yucatan believe that “I don’t know” is impolite. They usually give an answer, often a wrong one. A tourist can get very, very lost in Yucatan!When a tourist asks the Japanese the way to a certain place, they usually _______ .
A.describe the place carefully |
B.show him a map of the place |
C.tell him the names of the streets |
D.refer to recognizable buildings and places |
What is the place where people measure distance in time?
A.New York. | B.Los Angles |
C.Kansas | D.Iowa |
People inYucatan may give a tourist a wrong answer ________ .
A.in order to save time | B.as a test |
C.so as to be polite | D.for fun |
What can we infer from the text?
A.It’s important for travelers to understand cultural differences. |
B.It’s useful for travelers to know how to ask the way properly. |
C.People have similar understanding of politeness. |
D.New Yorkers are generally friendly to visitors. |