Mosquitoes have an extraordinary ability to target humans far away and fly straight to their unprotected skin. Regrettably, 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. 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 striking and 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.
1.What do mosquitoes mainly use to find their targets?
A. Sense of smell B. Sense of touch
C. Sense of sight D. Smart brains
2.The first response of the mosquitoes to the objects in the experiment is _______.
A. to fly to the dark ones
B. to catch and stick to them
C. to take no notice of them
D. to attach themselves to them
3.How can we avoid being attacked by mosquitoes according to the text?
A. Don’t let them see us.
B. Use dark objects to stop them.
C. Make them fly back and forth for hours.
D. Attract them to objects full of carbon dioxide gas.
4.What can be the best title for the text?
A. How Do Mosquitoes Survive?
B. Why Do Mosquitoes Need Blood?
C. How Do Mosquitoes Choose to Bite You?
D. Why Do Mosquitoes Attack the Human Being?
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Baths and bathing have long been considered of medical importance to man. In Greece there are the ruins of a bathtub and water system built over 3, 000 years ago. The Romans had warm public baths. In some as many as 3, 000 persons could bathe at the same time.
Treating disease by bathing has been popular for centuries. Modern medical bathing or hydrotherapy, first became popular in Europe and by the late 1700’s has also become popular in the United States.
For many years frequent bathing was believed to be bad for one’s health. Ordinary bathing just to keep clean was avoided and perfume（香水）was often used to cover up body smells!
By the 1770’s doctors began to say that soap and water were good for health. They believed that it was good for people to be cleaned. Slowly people began to bathe more frequently. During the Victorian Age of the late 19th century, taking a bath on Saturday night became common.
In the United States ordinary bathing was slow to become popular. During the 18th and early 19th centuries, many Americans were known as “The Great Unwashed!” In one American city, for example, a person could only take a bath every thirty days! That was a law!
Frequency of bathing today is partly a matter of habit. People know that bathing for cleanness is important to health. Doctors know that dirty bodies increase the chance of diseases. Consequently, in the United States, people generally bathe often. Some people bathe once a day at least. They consider a daily bath essential to good health.
1.In Greece ________ .
A. there were some public baths large enough to hold 3, 000 persons.
B. people used to treat disease by bathing
C. people began to bathe thousands of years ago
D. people didn’t like frequent bathing
2.The Americans used to be known as “The Great Unwashed” because ________.
A. the modem medical bathing first became popular in the U. S.
B. they didn’t bath frequently
C. the Americans were very clean.
D. soap was first produced in the U. S.
3.In the 18th century doctors believed that being clean was _______ .
A. unimportant B. good for health
C. harmful D. popular
4.During the Victorian Age,________.
A. the Americans ever took a bath every thirty days
B. frequent bathing was avoided
C. people used perfume to cover up body smells after bathing
D. the British people generally took a bath once a week.
A person, like a commodity （商品）, needs packaging. But going too far is absolutely undesirable. A little exaggeration, however, does no harm when it shows the person’s unique qualities to their advantages. To show personal attractiveness in a casual and natural way, it is important for one to have a clear knowledge of oneself. A skilled packager knows how to add art to nature without any signs of embellishment（装饰）, so that the person so packaged is not a commodity but a human being, lively and lovely.
A young person, especially a female, shining with beauty and full of life, has all the favor granted by God. Any attempt to make up would be self - defeating. Youth, however, comes and goes in a flash. Packaging for the middle - aged is primarily to hide the marks made by years. If you still enjoy life enough to keep self - confidence and work at pioneering work, you are unique in your natural qualities, and your attractiveness and grace will remain. Elderly people are beautiful if their river of life has been through plains, mountains and jungles, running its course as it should. You have really lived your life, which now arrives at a self - satisfied stage of quietness and calmness with no interest in fame or wealth. There is no need to make use of hair dyeing. The snow - capped mountain is itself a beautiful scene of fairyland. Let your looks change from young to old in step with the natural ageing process so as to keep in harmony （和谐）with nature, for harmony itself is beauty, while the other way round will only end in unpleasantness. To be in the elder’s company is like reading a thick book of deluxe （better quality）edition that attracts one so much as to be unwilling to part with.
As long as one find where one stands, one knows how to package oneself, just as a commodity sets up its brand by the right packaging.
1.It can be concluded from the text that ________.
A. people should be packed at all ages
B. people should be packed in a special way
C. elderly people also care about packing
D. proper packing makes people attractive
2.For the middle - aged, attractiveness________ .
A. hardly exists B. is the strongest
C. comes from the inside D. comes from the appearance
3.The underlined sentence means that elderly people ________.
A. are usually packed like a finely - made book
B. experience a lot and have rich knowledge of life
C. do a lot of traveling and can give you much information
D. enjoy reading thick books of beautiful nature and fairylands
书面表达
如今人们越来越关注身体的健康。作为中学生，我们也应该知道如何保持身体健康。请你根据以下提示，为《21世纪英文报》写一篇题为 “ The way to keep healthy”的文章。
1 尽量少吃含脂肪和糖分的食物，多吃水果和蔬菜，保证饮食平衡。
2每天参加一定量的滑动，以增强体质。
3保持良好的生活习惯。
要求：1.请包括以上要点，但不要逐句翻译；
2.可以适当扩充内容，以使文章流畅和连贯；
3.字数为100字左右（题目与开头已给出，不计入总词数）
The way to keep healthy
Nowadays people pay more and more attention to their own health in daily life. As students, we should know more about how to keep fit.
短文改错
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的短文。短文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
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：在错的词下画一横线，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。
On January 5th, students in our school visited Robot World, which we saw a great diversity of robot. I was amazing to find those robots could do a great number of things just like real people, included playing chess, playing the piano and drawing pictures. What’s more, the robots were in different kinds and shapes, which made us enjoyable. In addition, that excited me most is the show given by a group of robots. They danced just as if they were dancers on the stage. By visiting Robot World, I have learned a lot of about robots, especial about their functions and shapes. The great human wisdom is so powerful that it make us feel more comfortable live in the world.
