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 itchywound. Some mosquitoes spread sever 题目和参考答案——青夏教育精英家教网—

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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 obvi ously 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 mosqu itoes 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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Have you ever had a science class that you look forward to? It doesn’t happen often. But when you have a teacher like Mrs. Field, it’s more than a science class. It’s a science class where learning is easy and fun. There is no getting down to a huge textbook or listening to a teacher about something you don’t care about.

My experience with Mrs. Field didn’t start with science class, but with her as my tutor. I was always a weak reader and wasn’t getting any better. My parents told me I needed to be tutored. One day after school, I went into the library with my mom for my first tutoring time. I had no idea who was tutoring me. My mom practically had to drag me into the library. The first thing we did was to play a game to get to know each other and get rid of the awkwardness. We didn’t even play a reading game.

We also went around the library and I got to pick out a book I wanted to read. She didn’t make me read a boring textbook about something I didn’t care about. I didn’t even pick a book. I picked out a magazine about remote control cars. I thought to myself, how bad could it be? To my surprise, She told me even though I was reading a magazine, I was still reading. After the first magazine, she picked out a book she liked. I would read a chapter and then she would read a chapter to me, in this way I didn’t have to read for long periods of time.

As I got better and faster at reading, I was able to read two chapters in the same amount of time, which used to take me to read one chapter.

Reading is one of the most important things in high school and college to be successful. If it were not for her, I would not be the reader I am today !

1. The writer tutored by Mrs. Field because____________.

A. he was too shy to talk with others.

B. he found science fun but hard.

C. he was eager to learn science.

D. he lacked the skills of reading.

2. It can be inferred from the second paragraph that __________.

A. the writer knew Mrs. Field very well

B. the writer was unwilling to be tutored

C. the writer felt awkward to read in the library

D. the writer went to the library to play a reading game

3. At the library, the writer __________.

A. chose any book he was interested in

B. played a reading game with Mrs. Field

C. was asked to read one chapter after another

D. had to read textbooks rather than magazines

4.What’s the author’s feeling about Mrs. Field according to the last paragraph?

A. unsatisfied B. worried

C. grateful D. regretful

语法填空,阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Festivals and celebrations of all kinds 1. (hold) everywhere since ancient times. Most ancient festivals would celebrate the end of cold weather, 2. (plant) in spring and harvest in autumn. At that time people would starve if food was difficult to find, especially during the cold winter months.

Today's festivals have many origins, some 3._ ( religion) , some seasonal, and some for special people or events. Some festivals are held to honor the dead or to satisfy the ancestors, who might return either to help or to do harm. For example, the Japanese festival Obon is honored in __4. (memorize) of their ancestors. People then should go to clean graves, light lamps and play music __5. they think that this will lead the ancestors back to earth. In Mexico, people celebrate the Day of the Dead in early November. 6._ this important feast day, people eat food in 7. shape of skulls and cakes with "bones" on them. They offer food, flowers and gifts to the dead. The Western holiday Halloween also had _8. origin in old beliefs about the return of the spirits of dead people. It is now a children's festival, __ 9. they can dress up and go to their neighbors' homes to ask for sweets. The Dragon Boat Festival in China honors the famous ancient poet, Qu Yuan. India has a national festival on October 2 to honor Mohandas Gandhi, the leader who helped gain India's __10.__ （depend) from Britain.

At the last round of competition, Zhang Lei performed Xu Wei's hit song Journey, and won over Chen Zitong, with 66 votes from the media panel, and over 58% support from the _________ audience.

A. live B. living C. alive D. lively

短文改错

假段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以下作文。文中共有10处语言错误，每句中最多有两处。错误仅涉及一个单词的增加、删除或修改。

增加：在缺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(＼)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。

One evening after work John drove his secretary home because she failed to start her car. Not want to bother his wife, Maureen, he decided not to mention it to him. Later at that night, John and Maureen were driving out to eat while John spotted a high-heeled shoe hid under the passenger seat. Pointing to anything out of the passenger window to distract the wife, he picked up the shoe and throw it out of his window. They arrived in the restaurant a short time later. When they were about to get out of car,

Maureen enquired, “John, have you seen my other shoes?”

Once you get _______ something, it is very hard to ________.

A. addicted to; rid yourself of it

B. used to; rid yourself of it

C. accustomed to; be got rid of it

D. addicted to; get away with it

I became a teacher at 55 years of age. Things were going on so well during my first two periods. Then came my 3rd period class – the 8th graders with only one girl in the class. I thought the class was bad until the intercom(内部通话系统) came on and the office was asking if I was in my classroom. “Of course,” I responded. A student who knew he was going to be late for class had informed the office I was not in my classroom – 10 minutes after class began.

When the student came in and I walked over to greet him, he said, “Don’t touch me.” He then put his head on his desk and did not seem to listen to a word I said. I did not comfront(使面对) him with the “lie” to the office.

The next day he came into class on time. This time instead of listening or following instructions on keyboarding software, he played Internet games. I walked over to him. He looked at me ready to snap back(没好气地顶撞) at anything I said. I asked him, “Where did you learn to use a computer like that?” he looked at me surprised. I repeated, “You are really good at that. Where did you learn so much?” He began to tell me his father “used to” buy him games to play, but not anymore. I could feel the pain. Instead of blaming him for being off task, I surprised him and praised him for his skills. Then, I asked him to show me what he could do in our software. He was amazed.

On a Friday night at a high school football game, I really got my breakthrough(突破). From about five feet away, in front of his friends he came over to me and gave me a big hug saying, “Hi, Ms. Marie.” We talked for a while and before he walked away, he had hugged me two more times. This was a long way from “don’t touch me” on that first day.

1.How did the boy react(反应) towards Ms. Marie’s greeting on the first day?

A. Gratefully. B. Coldly.

C. Respectfully. D. Amazedly.

2.From the dialogue between Ms. Marie and the boy in Paragraph 3, we can infer that _____.

A. the boy was impatient with Ms. Marie’s interruption

B. the boy was proud to show how to play games

C. Ms. Marie was curious about the boy’s father

D. Ms. Marie felt sorry for the boy

3.By saying “I really got my breakthrough”, Ms. Marie meant _____.

A. she finally learned to play games

B. she won the boy’s trust in the end

C. she scored at the football game

D. she made great achievements in teaching

It hasn’t been ______ that food from cloned animals is really safe for humans to eat.

A. confirmed B. considered

C. turned out D. proved

–Why？This is simply a common bike!

–_____ sir．It’s our special offer today．

A． Don’t mention it

B． Let me see

C． So it is

D． Neither do I

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