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.

    He says the problem with teachers is, “What will a kid learn from someone who chose to become a teacher?” He reminds the other dinner guests that it's true what they say about teachers: Those who can, do; those who can't, teach.

    I decide to bite my tongue instead of biting his and stop myself from reminding the other dinner guests that it's also true what they say about lawyers—that they make money from the misfortune of others.

    “I mean, you're a teacher, Taylor,” he says to me. “Be honest. What do you make?”

    I wish he hadn't asked me to be honest, because now I have to teach him a lesson.

    You want to know what I make?

    I make kids work harder than they ever thought they could.

    I can make a C+ feel like a great achievement and an A－ feel like a failure.

    How dare you waste my time with anything less than your very best?

    I make parents tremble in fear when I call them: I hope I haven't called at a bad time, I just wanted to talk to you about something Billy said today.

    Billy said, “Leave the kid alone. I still cry sometimes, don't you?”

    And it was the bravest act I have ever seen.

    I make parents see their children for who they are and what they can be.

    You want to know what I make?

    I make kids wonder.

    I make them question.

    I make them criticize.

    I make them think.

    I make them apologies and mean it.

    I make them write, write, write.

    And then I make them read.

    I teach them to solve math problems that they once thought impossible.

    I make them understand that if you have brains then you follow your heart and if someone ever tries to judge you by what you make, you teach them a lesson.

    Let me make this simple for you, so you know what I say is true;

    I make a great difference! What about you?

    Brian was a funny student. He loved watching comedies（喜剧） best and hoped to become a comedy actor one day.

    When he heard about the talent show to be held at this school, Brian decided to take part in. He had never acted on stage before, and he was very excited. But some students laughed at him. “You are not funny but silly，” Ken, one of his classmates, said to his face. “No one will like what you do，” another boy also said to him, loudly.

    Brian couldn't understand why they were so unkind to him. For a moment, he thought about giving up the show. But he remembered how much his friends liked his jokes, and also his teachers said he was very funny. So he decided to prepare for the show.

    Brian did a great job at the talent show. Everyone loved his performance, and he won the first prize! His teachers and friends were proud of him. Even so, Ken told Brian that he was not funny, and that he would never be successful. Brian didn't understand why Ken said so, but he realized that it had nothing to do with him. He confidently continued to work towards his goal.

    As the years went on, Brian met more people like Ken. “You'll do a terrible job，” they said to him. Luckily, most people encouraged him and some helped him to become even funnier. He got a lot of opportunities to perform in movies. He was even invited to appear on television. His fans thanked him because his comedies made them feel good when they were unhappy.

    Now Brian is a big comedy star! He is doing what he loves best. He never feels stressed like those unkind people, and he laughs all day long!

    Many people like to explore the Internet. Exploring the Internet is one of the most important activities of the day. The Internet brings the outside world closer to people's homes. Some people say the world is smaller than before because of the Internet.

    What's going on in other countries? How do people live in places far away? Is there a good sports game somewhere？What's life like in the deepest part of the sea? If you want to answer all these questions, just come to the Internet. Of course, people can also learn through reading or listening to the radio. But with the Internet they can learn better and more easily. A lot of information can be collected at a great speed.

    Can we go shopping without leaving home? Can we see a doctor without going to the hospital? Can we study without going to school？ All these things seemed to be impossible, but now they have become true.  

    The Internet helps us to open our eyes. The Internet also helps to open our minds. The Internet often gives us new ideas. In a word, it helps us in many ways. Great changes have taken place in our life since the use of the Internet.

    To improve Chinese on our campus, several programs will be organized. Here is some information.

    Language Partner Program

    The aim of this program is to promote Chinese language study for American students, through this program, native speakers of Chinese can help our Chinese language students, who can help students or scholars from China with their English in exchange. If interested, please contact Yuan Lu, yuan-lu-2@uiowa.edu

    The Chinese Corner

    The Chinese Corner is a non-threatening, pleasant place for faculty and students who want to practice their oral Chinese. Learners of all levels are welcome to join, since we have topics suitable for each level. At the Chinese Corner, you can make friends with Chinese students and exchange opinions on cultural issues. You will surely learn something new every time you come! We welcome whoever wants to speak Chinese.

    Contact person: Bo Sun, bo-sun@uiowa.edu

    The Chinese Host Family Program

    The purpose of this program is to help our American students to gain first-hand experience of Chinese culture, lifestyle, customs, and conventions through establishing friendship relations with Chinese families. Students who join this program will be invited by their Chinese host family to join their family activities on a regular basis. Please sign up for this program.

    Cross-University Chinese Language Performance Competition

    This competition gives students in and outside of Iowa a great opportunity to show their oral Chinese proficiency as well as their talent in performing. As many as four universities have participated in the competition, including The University of Iowa. Each university presents a set of programs, and then participants are awarded prizes at an awards ceremony.

    Mid-Autumn Festival Celebration

    The Chinese Program hosts an annual celebration for the Mid-Autumn Festival. We invite all students and faculty members to join our party. You will meet Chang'e, the goddess of the Moon, learn a beautiful Chinese legendary story and taste moon cakes as well as other Chinese food. If you know some Chinese characters, you may win a prize! Come and join us!

    For more, please see the Flyer.

Most of the 20th century has been a development on the Industrial Revolution taken to an extreme: people now own more products than ever before; there are enough unclear weapons to destroy the earth several times over; there is hardly any forest left and pollution has got to the point where we buy water. Within a few years I predict you will be able to buy air. (There once was a time when you didn't need to buy food or shelter either.)

Important developments in the last century are the breaking down of the class structures left over from the Industrial Revolution stage, bringing with it the empowerment of the "common man": the working day is set by law to only 8 hours a day; everyone has the vote; the media has less obvious government control; people have landed on the moon, sent spacecrafts to Mars and so on. Families have also shrunk drastically (强烈地); the nuclear family came about, and especially in the last half of the 20th century, one­parent families are becoming more common. This shrinking in the size of the family shows the increased independence of people — once upon a time people had to live in large groups to survive.

As humans have "become the gods", they have realized their individuality and independence and taken their control of the world to an extreme. In many countries the land is almost completely used in the production of food and as living space and they live in small cities which are entirely human constructed, made from materials which are also entirely human constructed (concrete bricks) with hardly any remains of nature. Weeds are poisoned because they are messy; even parks have trees grown in tidy lines; grass is mowed to keep it short and so on. I think the massive drug "problem" troubling people is a result of too much of this influence, humans needing to escape the stark world they have created by entering fantasy worlds.

Over the last 100 years, the 20th century consciousness has spread throughout the world; most of Asia has been thoroughly "Westernized", and most of the Third World is being overrun by Western ways of doing things and living.