“Freelance retail consultant” refers to daigou in Chinese, or overseas people who buy goods for customers in the Chinese mainland.

     It's estimated that there are 40,000 daigou in Australia, most of whom are young migrants or international students looking for ways to help cover their rent and university cost.

    These freelance retail consultants have created thousands of trading routes, both small and big, into China.

    Shops in Australia sold out of instant formula （婴儿配方奶粉）, leaving many Australian parents unable to buy their preferred brands. The Sydney Morning Herald reported last year that half of Australia's infant formula sold went to China through customers selling to other customers.

    Because of this, daigou have received criticism from Australian media. The Sydney Morning Post even suggested that the Australian government should put a limit on instant formula exports.

    However, not everyone dislikes daigou. “We think daigou are good for the local economy and they are very good for our business,” Peter Nathan, the chief executive of A2 Milk, a New Zealand infant formula maker, told Reuters. “We clearly believe they are a positive force.”

    Others agree that nothing is wrong with the practice. “People are buying these products legally on the Australian market… they're not illegally being exported to China,” Tim Foulds, head of research at Euro monitor Australia and New Zealand, told The Washington Post.

    On a hot summer day in America a little boy decided to go for a swim in the old swimming hole behind his house. He dived into the cool water, not realizing that as he swam towards the middle of the lake, a crocodile was swimming toward him.

    His mother in the house was looking out of the window and saw the two as they got closer and closer. In great fear, she ran toward the water, shouting to her son as loudly as she could. Hearing her voice, the little boy became alarmed and made a U-turn to swim to his mother. It was too late. Just as he reached her, the crocodile reached him. From the shore, the mother grabbed her little boy by the arms just as the crocodile snatched his legs. That began an incredible tug-of-war (拔河) between the two. The crocodile was much stronger than the mother, but the mother was much too passionate to let go. A farmer happened to drive by, heard their screams, raced from his truck, took aim and shot the crocodile.

    Remarkably, after weeks and weeks in the hospital, the little boy survived. His legs were extremely scarred by the attack of the animal. And, on his arms, were deep scratches where his mother's fingernails dug into his flesh in her effort to hang on to the son she loved.

    The newspaper reporter, who interviewed the boy, asked if he would show him his scars(伤疤). The boy lifted his legs. And then, with obvious pride, he said to the reporter, “But look at my arms. I have great scars on my arms, too. I have them because my Mom wouldn't let go.”

    Never judge another person's scars, because you don't know how they were made.

    Thank you all for coming to the meeting. I'd like to start by confirming (保证) that we will receive some money from the government for our school trip to Indonesia. We will receive about $1,300 per child, which will reduce the whole cost to you.

    Now that we are sure to get the money, it is time to do some serious planning. We are sure that the trip will be very exciting for the children, especially if they have not traveled abroad before. There are many advantages(优点) of having some experiences to different places and cultures. Your children will be able to learn a lot about other people and cultures on this trip.

    Leanne is with us tonight. Leanne, where are you? Put up your hand so that the people can see who you are. Thank you. Leanne went on a trip there with some other students last year and will be happy to tell you of her experiences and answer any questions you might have. We will hear from her a bit later in the meeting.

    We only have five months to organize the trip. From past experience I can tell you that this time will go very quickly. So we need to start organizing the trip.

    This is the agenda (议程) for this evening's meeting:

    Passports: when and how to apply for one.

    Health matters: what precautions (预防措施) you need to take, plus any special needs that your child may have.

    Studying: what kind of the school and type of lessons your child will attend.

    Money: paying for the trip, plus how much money your child should take.

   Hotel: where we will be staying clothing and personal items that your children should take with them.

    Until recently, scientists had mapped only about 20 percent of the sea floor. But our knowledge of the deep seas is changing because of information from satellites. Scientists have produced a new map that provides a detailed picture of the oceans. The map is expected to help oceanographers (海洋学家), industry and governments.

    The new map is twice as detailed as the map made 20 years ago. David Sandwell is a geophysics professor at the University of California. He and other scientists worked on the mapping project. He says they turned to space to look deeper into the ocean.

    The scientists collected and studied information from two satellites. Some of the data came from the European Space Agency's Cryo-2 satellite. It was placed in Earth's orbit to watch sea ice. The other satellite is the American space agency's Jason-1. It is studying the surface of the oceans. Scientists combined the satellite data with images gathered by sonar (声波定位仪) equipment on ships. Sonar works by sending sound waves through the water. When the sound waves hit an object, its presence is confirmed.

    The new map shows the sea floor as it has never been seen before. It shows thousands of underwater mountains and places where continents pulled apart. It shows where earthquakes were active many years ago. They all are buried deep underneath the ocean floor.

    David Sandwell says the map is a powerful tool for fisheries, those interested in protecting the environment and for oil exploration.

    “The petrol exploration industry is interested in how to reconnect the continents, bring them back together tectonically so you can map the basins （盆地）on one continental edge—say, Africa—and use that to establish where the similar basin would be on the other continental edge in South America.”

    If scientists know that information, they may be able to find oil fields. The new data also will help scientists improve their estimates of ocean depths. This information can help ships travel safely and improve military operations and scientific projects worldwide.

    Mr. Sandwell thinks scientists will make many more discoveries as they examine the new map and the information it provides.

    I often dreamed about Pisa when I was a boy. I read about the famous building called the Leaning Towers of Pisa(比萨斜塔）. But when I read the word Pisa, I was thinking of pizza. I thought this tower must be the best place to buy pizza in the world.

    Many years later, I finally saw the Leaning Tower. I knew then that it was Pisa and no pizza and that the tower got its name because it really did lean to one side. Some people want to try to fix it. They are afraid that it may fall over and they don't want it to lean over the city.

    I don't think it a good idea to try to fix it. The tower probably will not fall down. It's 600 years old. Why should anything happen to it now? And, if you ask me, I like what it looks like. It seems to say nothing is perfect. Imperfect things may be more interesting. Why is it so famous? There are many other older, more beautiful towers in Italy but Pisa tower is the most famous.

Sharks have been swimming in the ocean for millions of years. They were on Earth even before dinosaurs! At the top of the world's ocean's food chain, sharks help keep the population of other ocean animals in balance. A large drop in the number of sharks can cause serious problems for all ocean animals. Saving sharks makes sense!

Many people are afraid of sharks. But most sharks are harmless. Only a small percentage of sharks are known to attack humans. It adapt (适应) well to new habitats and eat whatever is available. However, today, sharks are in trouble. Nearly one－third of the 400 shark species are in danger of extinction, largely due to over－fishing. Each year, tens of millions of sharks are caught and killed just for their fins. The fins are used to make shark fin soup.

Humane Society International (HSI) joined with the Jane Goodall Institute's Roots and Shoots program and Beijing Zoo to protect sharks. An exhibit at the zoo, "the Price Behind the Taste—Protect Sharks. Don't Eat Shark Fins", was designed to tell people that shark finning is cruel and unnecessary. It's hoped that the activity will help put an end to the practice.

Shark fin soup is also eaten in the United States. In fact, the numbers of some shark species in US waters have dropped 90 percent in the last 30 years. To slow the fall, laws against the sale of shark fins have been passed in several states, including Hawaii, Oregon, Washington, and California.