Sleep Struggle
One in every five young people has a sleep problem, so you're not alone. Getting enough sleep has become as important as eating vegetables and exercising regularly. It's very important for your body.
Most young people only get seven hours of sleep each night, when they actually need nine hours. And making up for lost sleep during the week by sleeping on weekends doesn't really work. In fact, sleeping late on weekends may actually do you more harm than good, if you have sleep problems.
What happens if you don't get enough sleep? If your sleep problem continues for a few nights, you could suffer serious problems. Lack of sleep can affect learning and memory. Worse, if your sleep difficulties last a long time, that could lead to anxiety (焦虑). Therefore, you've got to have some healthy sleep habits. Below are some suggestions:
•Go to bed at the same time—including weekends, if possible.
•Wake up around the same time every morning. When you sleep late just one morning during the week, it may disturb your body clock. This will make it hard for you to sleep that night.
•Do something relaxing before going to bed.
•Exercise during the day. Don't exercise right before going to bed.
•Avoid drinking. Alcohol (酒精) makes you excited. This prevents you from falling asleep or wakes you up during the night.
•Don't smoke. Smoking is always bad for the body. Smoking before bedtime keeps you awake.
If trying these tips over a couple of weeks does not help you, speak to your doctor. Do not take any medicine without first asking your doctor. Many of them have strong side effects.
Growing Up in Australia
Since 2004, Australia has been holding its largest study of children's health ever. This project, “Growing Up in Australia,” is following two groups of children from early childhood until they become adults. The project is being supported by the Australian government and involves hundreds of researchers visiting the homes of 10,000 children. Researchers hope to find a relationship between the children's future behavior and their health, education, and family environments.
When the study began, the first group of children was aged 0-1, while the second group was aged 4-5. In order to make sure that children from every kind of environment and background were chosen, the study found volunteers from each area. Some volunteers are in the countryside, while others are in big cities. The volunteers for both groups were chosen from a variety of different social and ethnic (种族) backgrounds.
The researchers visit the participants' (参与者) homes every two years to gather information. They interview the parents about parenting styles and the child's daily activities. They also take measurements of the children's health and how well the children perform in school. The researchers also collect information such as the income of the child's family, the school the child attends, and the kind of community (社区) in which the child lives. They plan to use the information to improve children's lives.
Researchers have already begun to publish some interesting results. For instance, after examining information from the second group of children when they were 10-11 years old, researchers found that children who spend a lot of time doing organized activities, such as music lessons or sports, have good control of their emotions and behavior. The study also found that they are able to complete their homework without their parents around. On the other hand, it found that children who watch a lot of television get upset easily and have worse behavior. The Australian government is now using this information to make better educational and health policies for Australian children.
Mosquitoes have an extraordinary ability to find humans far away and fly straight to their skin. Mosquitoes can do more than cause an itchy (发痒的）wound. Some mosquitoes spread several serious diseases, including Dengue, yellow fever and malaria.
Over one million people worldwide die from these diseases each year. New research now shows how mosquitoes choose who to bite.
Mosquitoes need blood to survive. They are attracted to human skin and breath. They smell the carbon dioxide gas, which all mammals breathe out. This gas is the main way for mosquitoes to know that a warm-blooded creature is nearby.
But mosquitoes also use their eyes and sense of touch. Michael Dickinson is a professor at the California Institute of Technology. His research shows how these small insects, with even smaller brains, use three senses to find a blood meal.
Michael Dickinson's team used plumes—a material that rises into the air of carbon dioxide gas into a wind tunnel (隧道). They then used cameras to record the mosquitoes. The insects followed the plume.
Then, the scientists placed dark objects on the lighter colored floor and walls of the tunnel. Mr. Dickinson said, at first, the mosquitoes showed no interest in the objects at all. “What was quite surprising is that the mosquitoes fly back and forth for hours. These are hungry females and they completely ignore the objects on the floor and wall of the tunnel. But the moment they get a hit of CO₂, they change their behavior quite obviously and now would become attracted to these little visual blobs (斑点).”
This suggested to the researchers that a mosquito's sense of smell is more important in the search for food. Once mosquitoes catch a smell of a human or animal, they also follow visual signals.
On Monday, the Centers for Disease Control and Prevention predicted that 42% of Americans could be overweight by 2030. Our expanding bodies not only lead to a medical problem, but also endanger personal safety in some situations—in an airplane crash, for example, according to a recent article in The New York Times.
The New York Times' Christine Negroni reports that engineers and scientists are questioning whether airplane seats are designed to protect overweight travelers. Government standards(标准) for airplane seat strength—first set more than 60 years ago—require that the seats be made for a passenger weighing 170 pounds. Today, the average American man weighs nearly 194 pounds and the average woman 165 pounds. Negroni reports:
“If a heavier person completely fills a seat, the seat is not likely to behave as designed during a crash,” Robert Salzar, the leading scientist at the Center for Applied Biomechanics at the University of Virginia. “The energy that is built into the aircraft seat is likely to be overpowered and the passengers will not be protected properly”.
“Nor would the injury be limited to that passenger only,” Dr. Salzar said. “If a seat or a seat belt fails,”he said, “those people who are seated nearby could not be safe from the uncontrolled movements of the passenger.”
Most complaints(投诉) about airplane seats focus on their lack of comfort and high ticket price, and whether overweight passengers should be made to buy two seats. But The New York Times' article brings up another reason to feel anxious about flying. Investigators(调查者) got in touch with the airplane seat and seat belt makers, but they refused to talk about the problem. Experts agreed that crash testing should be done. Both airplane seats and seat belts should be tested, they said.
Fortunately, however, according to Nora Marshall, a senior adviser at the National Transportation Safety Board, the board's investigators have never seen an accident involving a commercial plane in which the weight of a passenger was a problem.
根据语境，用方框中所给短语的适当形式填空。（每个短语仅使用一次）
by coincidence: on the other hand: be typical of: aim at: in possession of: in one's attempt as well as: a great deal of |
→It for you to buy that expensive coat when these cheaper ones are just as good.
→The first meal of the day should be rich；otherwise you feel hungry later.
→Nowadays，there are reasons homeschooling has become popular in many countries.
→This form of poetry for English writers .
→ I failed in the entrance exam was I didn't study hard.
→The windows of the classroom need .
→ he returns to his hometown，he always goes to see his old teachers.
→It is time that you the performance.
take your time, run out, translate. into., be made up of, make sense, express oneself, stay up, be popular with, choose from, on one's own |
—Of course. , sir.
In a tiny room, Jenny was lying in bed waiting for an operation, nervous and worried. 1, another patient was squeezed in. After a gentle greeting, they 2the chatting. The 80-year-old newcomer was named Susan. Her son 3ran a company as CEO and her daughter worked on a TV station as director. Since her children were too 4to take care of Susan, she lived in an old people's home. Susan was proud of her children who had wonderful 5. Jenny really 6Susan. Compared with Susan, Jenny was 7but an ordinary country woman whose children were just ordinary workers.
Soon, it was supper time, Jenny's daughter cooked 8dishes which were her favorite. Jenny invited Susan to share her supper, but she9.Susan was 10her daughter when she received a call. 11,her children couldn't come to visit her. Worse still, Susan had 12the mealtime in the hospital. She lay in bed, 13and silent. Jenny's daughter offered to buy her some food but she had no appetite 14.
The next day, Jenny and Susan would go through a series of regular medical checks before the operation. Jenny's daughter 15to her carefully while Susan was still alone. Out of sympathy, Jenny's daughter offered to queue(排队) up, fill in different 16and register for Susan. For several days in hospital, even during her 17,Susan's children didn't show up. Susan really envied Jenny whose daughter looked after her all the time 18she recovered and moved out of hospital.
Care from the loved ones when ill can really make one happy and encouraged, especially for a(n) 19parent. So while devoted to your career, don't forget your role in your 20.
增加：在缺词处加一个漏词符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1）每处错误及其修改均仅限一词；
2）只允许修改10处，多者（从第11处起）不计分。
Two years before, I traveled to Brazil and I rented for a car. Unfortunate, I had an accident and hit another car, and I needed to stay in a hospital for at least two week. I called my parents, so I did not tell them what had happened. I knew that they will be worried about myself because I was so farther away, and that my mother would not sleep if she knew. Therefore, I told them interested stories and how I was enjoying Brazil. As a result, nobody knew truth. I still think that it was the right thing to do.
You might think that “global warming” means nothing more than a rise in the world's temperature. But rising sea levels caused by it have resulted in the first evacuation (撤离) of an island nation, the citizens of Tuvalu will have to leave their homeland.
During the 20th century, sea level rose 8~12 inches. As a result, Tuvalu has experienced lowland flooding of salt water that has polluted the country's drinking water.
Paani Laupepa, a Tuvaluan government official, reported to the Earth Policy Institute that the nation suffered an unusually high number of fierce storms in the past ten years. Many scientists connect higher surface water temperatures resulting from global warming to greater and more damaging storms.
Laupepa expressed dissatisfaction with the United States for refusing to sign the Kyoto Protocol, an international agreement calling for industrialized nations to reduce their greenhouse gas emissions (排放), which are a main cause of global warming. “By refusing to sign the agreement, the US has effectively taken away the freedom of future generations of Tuvaluans to live where their forefathers have lived for thousands of years.” Laupepa told the BBC.
Tuvalu has asked Australia and New Zealand to allow the gradual move of its people to both countries.
Tuvalu is not the only country that is vulnerable (易受影响的) to rising sea levels. Maumoon Gayoon, president of the Maldives, told the United Nations that global warming has made his country of 311,000 an “endangered nation”.
It was very late, but they working.
he can do a good job.
Their carelessness the failure.
The factory turns out paper products.
He's going to buy the farm they raise the price.
