If you want to keep healthy, you should have good habits. What is a habit? It is something we do very often. We don’t even think when we do it. It has become a part of our lives.
“Early to bed, early to rise makes a man healthy, wealthy and wise.” This is an old English saying. Do you know what it means? It means that we must go to bed early at night and get up early in the morning. If we do, we shall be healthy, rich and clever.
Is this true? Perhaps it is. We know the body must have enough sleep. Boys and girls need eight or nine hours’ sleep every day.
Some people go to bed late at night and get up late in the morning. This is a very bad habit. Then you will not think or do your work well. Of course, you can’t be healthy, wealthy or wise.
When we get up early in the morning, we can go out and do morning exercises. Exercise means doing things with the body. Walking, running jumping, swimming, and playing ball games are all exercise. If we don’t exercise, our body will become weak.
Exercise helps the blood (血液) to move around inside our body. Blood takes food to all parts of our body.
Our body also needs air to breathe. Without air, we will die. We must have lots of clean fresh air if we want to be healthy. That is why many people like to go out to do morning exercise.From the passage we know that it is good for our health to ____ .
| A．eat a lot | B．go to bed early | C．get up late | D．go to bed late |
How long should young boys and girls need to sleep a day?
| A．More than ten hours | B．Over eleven hours. |
| C．Less than seven hours. | D．Eight hours or so. |
If we want to keep healthy, we must ____ .
| A．eat more food | B．sleep more | C．get up late | D．take enough exercise |
Which of the following habits is NOT GOOD?
| A．Don’t go to bed until twelve o’clock.. |
| B．Take a walk after supper. |
| C．Run in the open air early in the morning. |
| D．Climb hills for half an hour early in the morning. |
A 17-year-old boy, caught sending text messages in class, was recently sent to the vice principal's office at Millwood High School in Halifax, Nova Scotia. The vice principal, Steve Gallagher, told the boy he needed to focus on the teacher, not his cellphone. The boy listened politely and nodded, and that's when Mr. Gallagher noticed the student's fingers moving on his lap. He was texting while being scolded for texting. “It was a subconscious act,” says Mr. Gallagher, who took the phone away. “Young people today are connected socially from the moment they open their eyes in the morning until they close their eyes at night. It's compulsive.”
A study this year by psychology students at Covenant College in Lookout Mountain, Ga., found that the more time young people spend on Facebook, the more likely they are to have lower grades and weaker study habits. Heavy Facebook users show signs of being more sociable, but they are also more likely to be anxious, hostile or depressed. (Doctors, meanwhile, are now blaming addictions to 'night texting' for disturbing the sleep patterns of teens.)
Almost a quarter of today's teens check Facebook more than 10 times a day, according to a 2009 survey by Common Sense Media, a nonprofit group that monitors media's impact on families. Will these young people get rid of this habit once they enter the work force, or will employers come to see texting and 'social-network checking' as accepted parts of the workday?
Think back. When today's older workers were in their 20s, they might have taken a break on the job to call friends and make after-work plans. In those earlier eras, companies discouraged non-business-related calls, and someone who made personal calls all day risked being fired. It was impossible to imagine the constant back-and-forth texting that defines interactions among young people today.
Educators are also being asked by parents, students and educational strategists to reconsider their rules. “In past generations, students got in trouble for passing notes in class. Now students are skilled at texting with their phones still in their pockets,” says 40-year-old Mr. Gallagher, the vice principal, “and they're able to communicate with someone one floor down and three rows over. Students are just fundamentally different today. They will take suspensions rather than give up their phones.”The underlined word “a subconscious act” refers to an act __________.
| A．on purpose | B．without realization |
| C．in secret | D．with care |
Mr. Gallagher reminds us that the students in the past and those today _________.
| A．like to break rules and have the same means of sending messages |
| B．are always the big problem for the educators and their parents |
| C．like sending text messages but those today do it in a more secret and skillful way |
| D．cannot live without a cellphone |
What’s the best title of the passage?
| A．Teenagers and Cellphones |
| B．Teenagers’ Texting Addiction |
| C．Employers and Teenagers |
| D．Teenagers’ Education |
The sound of a mosquito can mean trouble in many parts of the world. The bite of the mosquito can be deadly. The insects carry serious diseases like malaria (疟疾). It is estimated that almost 630,000 people died from malaria and malariarelated causes in 2012, and most of these cases were in African countries.
In the United States, a group of California scientists are working to develop a more effective and less costly substance (物质) to protect people from mosquitoes. The researchers are investigating the sense of smell in mosquitoes. They found the insects use the same receptor for identifying carbon dioxide in human breath as they do for the smell of our skin. Anandasankar Ray, who is leading the investigation, says scientists tested more than a million chemical compounds (化合物) until they found a substance called Ethyl Pyruvate. He says Ethyl Pyruvate makes the mosquitoes' receptors inactive. “When we apply Ethyl Pyruvate to a human arm and offer it to hungry mosquitoes in a cage, very few of the mosquitoes are attracted to the human arm because only a few of them are able to smell it out,” said Ray.
Genevieve Tauxe, a member of the research team, says it was not easy to find the neurons (神经元) of noble cells that recognize both the smell of human breath and skin. “With the device used to examine the mosquito, we are able to insert a very small electrode (电极) into the part of the mosquito's nose, where its smelling neurons are and where the smell is happening,” said Tauxe.
Anandasankar Ray says a product based on Ethyl Pyruvate may cost less to produce than DEFT, the most effective chemical treatment now in use. He says DEFT is too costly for most people who live in areas affected by malaria.
“Perhaps by finding smells that can attack other target receptors, we will be able to improve upon DEFT and finally have the next generation of insect behaviour control products,” said Ray.The underlined word in the second paragraph probably means ________.
| A．a substance that protects people from mosquitoes |
| B．a piece of equipment that sends signals |
| C．a device that reacts to light |
| D．a sense organ that reacts to changes |
According to the passage, Ethyl Pyruvate can ________.
| A．kill the mosquitoes' smelling neurons |
| B．cause the mosquitoes to lose their senses of smell |
| C．result in the inactiveness of the mosquitoes' receptors |
| D．make the mosquitoes uninterested in human breath and skin smell |
Which of the following would be the best title for the passage?
| A．Ethyl Pyruvate—an Insect Behaviour Control Product |
| B．Malaria—a Serious Disease Causing 630,000 Deaths |
| C．Scientists Find a New Substance to Fight Mosquitoes |
| D．A New Generation of DEET Has Been Developed to Kill Mosquitoes |
This passage most probably appears in ________.
| A．a textbook of medical schools |
| B．a collection of doctors' essays |
| C．the column of newspaper ads |
| D．the health column of a magazine |
The associates I hired in my bicycle and lawn mower shop like myself were never perfect; however, they were excellent. Working with them as they improved taught me new ways to show forgiveness, understanding, and patience.
One day the placement officer asked me to interview a young man who was having trouble finding a job. He told me that David was a little shy, did not talk much and was afraid to go on with interviews. He requested that I give David an interview just for practice. He plainly told David that I had no positions open at the time and the interview was just for practice.
When David came in for the interview, he hardly said a word. I told him what we did at the bicycle shop and showed him around. I told David to keep showing up because the number one thing an employer wanted in an associate was dependability.
David was very quiet (he was evaluated as a slow learner in school). Every ten days or so, for weeks after the interview, David walked into the bicycle shop and stood by the front door. He never said a word, just stood by the door.
One day, shortly before Christmas, a large truck came to the shop, packed with 250 new bicycles. It had to be unloaded right away or the driver would leave.
It was raining. Some of my workers (without physical limitations) chose not to brave the weather to get into work, so I was short-handed. It seemed everything was going wrong and on top of it, David came in the front door and just stood there. I looked at him and shouted, “Well, all right! Fill out a time card and help me unload this truck!”
David worked for my bicycle shop for eighteen years. He came to work every day thirty minutes early. He could talk; however, he rarely chose to. He drove my truck and made deliveries. The customers would praise David, saying, “He doesn’t talk, but he really shows you how to operate a lawn mower!”The author finally hired David because________.
| A．there were no other workers in the shop then |
| B．he needed someone who was willing to work then |
| C．David kept showing up |
| D．he realized David was dependable |
We can infer from the last paragraph that_______.
| A．the author feels lucky to hire David |
| B．David has had his character changed through work |
| C．the author prefers David to be more outgoing |
| D．some customers just play jokes on David |
The author gave David an interview to _______.
| A．find a person who is reliable |
| B．find a part-time worker in need |
| C．give him some practice |
| D．show sympathy for him |
The author’s tone in describing David is full of ______.
| A．pity | B．wonder |
| C．disappointment | D．appreciation |
A British shopper, Emma Mumford, who was named “the Coupon(优惠券) Queen” has spent just £350 on a luxury(奢侈) Christmas for her and her family—but got £2,500 worth of food, drink and presents thanks to coupons and offers.
Ms Mumford is a so-called “extreme couponer” and spends hours hunting out the best deals and bargains. She has been preparing for this Christmas since the end of the last one. Ms Mumford made the huge savings by checking price comparison websites and as a result collected more presents than she needed for Christmas. After sorting out gifts for all of her family, she has even been able to donate £1,000 worth of presents to her local hospital.
“It has been so nice to have Christmas sorted and not having to worry about breaking the bank. I wanted to get high quality presents for my family and show that you can do it without spending a fortune. There is a misconception that everyone who does couponing only gets value products but through my careful shopping I have managed to purchase designer perfumes(香水), a high-end coffee machine.” she explained.
She said “What started as a hobby to help me save money has turned into my life and I am able to run a business helping people save money. I know what it feels like to struggle as my ex-partner had a lot of debt which I took on for him. We were in a poor situation where every penny counted. That’s what really inspired me.”
She has now turned her bargain-hunting addiction into a business where she searches for the best deals and offers tips to the general public through video blogging and her Facebook Page.
“I try and show people that it is just a little bit of work in the beginning but it will eventually pay off. One of the best things to do is just to be a bit forward thinking and save throughout the year.”What does “breaking the bank” in the third paragraph mean?
| A．Buying presents of low quality. |
| B．Breaking into the bank. |
| C．Spending more money than you have. |
| D．Taking out money from the bank. |
What really inspired Emma to help people save money?
| A．Her addiction to bargain-hunting. |
| B．The financial difficulties she shared with her ex-partner. |
| C．The poor situation people around her were going through. |
| D．Her experience of running an unsuccessful business. |
Which of the following can best describe Emma?
| A．Ambitious and creative. |
| B．Sensitive and determined. |
| C．Brave and lucky. |
| D．Careful and caring. |
How did Emma make the huge savings?
| A．She compared prices through websites. |
| B．She hunted out bargains in real shops. |
| C．She used coupons and offers worth £3,500. |
| D．She collected more Christmas presents than needed. |
If you want to cook something quickly, you heat it from both sides. That’s what’s happening to the West Antarctic ice sheet(南极洲西部冰盖). A new study reveals that the area under the ice sheet is far hotter than previously thought, fed by an unexpected flow of geothermal energy(地热能). While the CO2 we send out heats the atmosphere above the continent, earth is melting us ice from below.
If you were to drill (钻) deep at some place on the continents, you would find that the temperature increases about 25℃ for every kilometer deep into the hole on average. Scientists call this the geothermal gradient(地热梯度). Until recently, no one had drilled deeply enough through the West Antarctic ice to determine the geothermal gradient underground. For the new study, researchers drilled all the way through the ice and into the mud. They found that the geothermal gradient was about 200℃, which is several times the global average on continents. Few predicted this result, although it had been showed that the earth below the West Antarctic ice is unusually hot.
Even with the new discovery, though, we still don’t know exactly where the heat is coming from. One interesting possibility is volcanoes, which are under the ice. As recently as 2013, scientists were still discovering volcanoes under the ice in the area, and there may be many more.
Some people say that these volcanoes, rather than manmade climate change, are responsible for melting the area’s ice. While it’s true that heat coming from within the earth, including heat related to volcanoes, makes the melting faster, it is just one contributor to the loss of the West Antarctic ice sheet---not the main cause. Today’s study could help us understand how the whole system, including global warming, is melting the ice.What’s happening to the West Antarctic ice sheet?
| A．The ice sheet is getting hotter and hotter. |
| B．It is heated from below rather than from above. |
| C．The ice sheet is producing a new kind of energy. |
| D．It is melting from both sides. |
What can be learned from the second Paragraph?
| A．It was the first time that researchers had tried to measure geothermal gradients. |
| B．The geothermal gradient showed where the heat came from. |
| C．The result was beyond the researchers’ expectations. |
| D．Researchers never knew the earth under the West Antarctic ice was hot. |
The author would probably agree that ___.
| A．the new discovery is unhelpful without a certain conclusion |
| B．no volcano has been found to support the researchers’ idea |
| C．volcanoes are the most important reason for the melting of the ice |
| D．global warming is surely one reason for the melting of the ice |
What’s the main idea of the passage?
| A．The West Antarctic ice sheet is in danger. |
| B．Researchers are trying to stop global warming. |
| C．The West Antarctic ice sheet’s melting will bring terrible consequences. |
| D．It has been known how to stop the melting of the West Antarctic ice sheet. |