“It's just a story,”you may think. But new research has found that crows' brains may sometimes be better than those of 6-year-old children.

In a recent experiment, American scientist Corina Logan and her team caught six crows to test them. The crows and children had to choose between two sets of tubes(试管). They had to drop stones in and get water.

With the red set, when they dropped a stone into a wide tube, the water level raised in a connected narrow tube. The blue set of tubes, however, had no connection between them.

Children aged 7 to 10 were able to learn the rule. Children aged 4-6, however, failed.Five of the six crows failed the test. But Kitty, a 6-month-old crow, passed it. She put most of the stones into the red tubes.

So, could a bird be more clever than a kindergartner? Don't be too quick to say no.

    Sun Tang is a thirteen-year-old girl and she studies in a big school．She is in Mr Yang's class．Mr Yang teaches Chinese and he thinks students should keep a diary(写日记)．He believes it's a good way to learn Chinese．Sun Tang is good at maths，but she isn't interested in keeping a diary．Last Friday,Mr Yang introduced a book about writing to Sun Tang．Yesterday,she took a bus to the shop and bought the book．

    Wu Kai is twelve years old and studies in a small school．He is in Miss Ling's class and he is the PE monitor．Wu Kai has a strong body and plays basketball well．He also likes other sports，such as swimming．But his mother worries about him and always asks him not to swim alone．So Wu Kai often swims with his father．It's hot today．Wu Kai wants to swim after school.

根据材料内容选择最佳答案。

    Andrew Holleman, a 12-year-old boy, loved playing in the open land near his home. The land was wet and forested, and made a home for birds, other animals and many different plants.

    It made the perfect place for him to study and get to know nature. He had seen some red-tail hawks, red foxes, wood turtles and other animals. He also found special native flowers.

    Suddenly it was reported that the "empty" land would be improved by a lot of houses on it. The plants would be removed, the animals would run away and most would probably die. Then the wet soil would be covered with extra grounds.

    When he heard about the news, he was not happy. He was very worried that the land and water would be polluted. Andrew wrote down clearly all the research he had done about the area, and how the houses would affect(影响)the local environment. He sent letters to members of local government and television reporters. He also called on his neighbors to oppose the building of the houses.

    Although he was only 12 years old, he had the courage and wisdom of a person much older.

    Andrew's teachers described him as a gentle, shy and active. His classmates also admired how much he knew about local animals and plants, and the environment. Each day after school, Andrew went door-to-door, to ask the people to sign(签字), who did not want the houses to be built. In only one month, he got the signatures of 250 people.

    In the end, the land remained a safe place for birds, animals and plants that belonged there.

    Andrew won many prizes for his brave and great work to stop the houses being built, and he helped save the environment.

    My name is Alan. I'm 12. I am English. My English teacher is Ms. Green, Her daughter is Helen. She is 13. Helen and I are good friends. This is Helen's school ID card. Its number is A-207789. My school ID card number is A-308828. I lost my school ID card this morning. I must find it. If you find it, please call me at 031—5655. You can e mail me at alan@163.com, too.

    Yesterday afternoon Mr. Brown wanted to catch the 1:30 flight to New York to have an important meeting. At 4:30, Mrs Brown, his wife, got his phone call and he said that he was still at the airport.

    "What happened to you?" Mrs Brown asked in surprise.

    "Well," Mr. Brown said. "Everything was fine at first. I got my ticket checked, took my bags and waited in line to get on the plane. While I was walking across the runway to the plane, I saw my friend Jack Scott—he was a flight attendant. I shouted to him and a policeman caught me."

    "But why?"

    "I don't know. As soon as he heard my shout, he ran towards me and caught me."

    "What did you shout to your friend?"

    "All I said was 'Hi, Jack' ; you know that's the usual way we say hello to our friend."

    "But the sentence 'Hi, Jack' also means to take control of a plane by force(武力). Don't you know?"