快餐现在在中国很流行，但快餐对人的身体却没有什么好处。请根据以下要点以“Fast Food”为题写一篇100词左右的短文。（1）快餐在中国很流行，人们尤其是儿童和青少年喜欢吃快餐。（2）快餐受欢迎是因为方便，节约时间；即可在快餐店里吃，又可带回家吃：（3）从营养学分析，快餐食品却不尽人意。（4）建议：如果时间来不及可考虑吃快餐，但以偶尔品尝为宜；儿童尽量少吃。

                                                                                                  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.

    Women are friendly. They often share with others. But men are more competitive. They are trying to improve their social status. Why? Researchers have found it's all due to the hormone oxytocin (荷尔蒙催生素). Although known as the love hormone, it affects the sexes differently.

    Generally, people believe that the hormone oxytocin is let out in our body in various social situations and our body creates a large amount of it when falling in love or giving birth.

    But in a former experiment Professor Ryan found that the hormone is also let out in our body during a negative situation such as envy (嫉妒).

    Further researches showed that in men the hormone oxytocin improves the ability to recognize competitive relations, but in women it raises the ability to recognize friendship.

    Professor Ryan's recent experiment used 62 men and women aged 20 to 37.

    Half of the participants (参与者) received oxytocin. The other half received placebo (安慰剂).

    After a week, the two groups switched with participants. They went through the same steps with the other material.

    Following each treatment, they were shown some video pictures with different social behavior. Then they were asked to analyze the relations by answering some questions. The questions were about telling friendship from competition. And their answers should be based on gestures, body language and facial expressions.

    The results showed that, after treatment with oxytocin, men's ability to correctly recognize competitive relations improved, but in women it was the ability to correctly recognize friendship that got better.

    Professor Ryan thus concluded, “Our experiment proves that the hormone oxytocin can raise people's abilities to better tell apart different social behaviors.”

要点提示：1）节约水电等；

2）主动向周围人宣传节约能源的思想。

注意：1）词数100左右。开头已为你写好，不计入词数；

2）内容可适当发挥，注意行文连贯。

    These days wasting things has become a common phenomenon around us. ……

增加：在缺单词处加一个漏字符号（∧），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。

    It was a sunny day today and I went to Xishan Park for a spring outing. The moment I entered in the park, a variety of beautiful flowers and green trees come into sight. Attracted by the beauty, I couldn't stop taking photo. As I wandered along the path, enjoy the beautiful view, I noticed something unpleasantly. Two schoolgirls jumped the fence to pick flowers. Obviously they didn't realize that their behavior had done great damage on the beauty of the park. Without delay, I went up and stopped them politely. Quite embarrassing, the two girls came out immediately. Then we took pictures outside the fence. Seeing that, I smiled and something looked nicer in my eyes.