Better think twice before choosing a password for e-mail, online bank or shopping. Simple passwords are easy to be stolen.

A password is like a key to your home. If someone steals it, he'll get chances to steal something else. We use passwords everywhere in our life. We are so used to passwords that we don't pay any attention to them until we lose or forget one.
A study of 28,000 passwords recently stolen from a popular website showed that people often do the easy thing. It found that 16 percent took a first name as a password. Another 14 percent used the easiest keyboard combinations such as “12345678” or QWERTY. Five percent of the stolen passwords were names of television shows or stars popular with young people. Three percent of the passwords expressed feelings like “I don't care,” “Whatever,” “I love you,” or their opposite, “I hate you.”
Robert Graham, who did the study, advises people to choose a password that is longer than eight characters with one capital letter(大写字母) and one symbol.
Of course, safe passwords don't mean those hard to remember. Forgetting your password is sometimes a big headache for you. Maybe, the perfect password is easy for you and hard for others.

    In the past， many students practiced English with their pen friends — they sent letters to people all around the world. However， we now send emails to others and chat with people who live quite far away on the Internet.

    Here's some advice on how to succeed in your online language exchanges：

    How to start a conversation when speaking English online When you speak to somebody online， start by asking “Yes or No” questions. Use questions such as “Do you like …?” or “Can you …?” or “Have you ever …?”

    Remember your goal. You are trying to learn about the other person. Think about things you enjoy and try to find some common ground between you. And share your own experiences to show that you have similar interests. If you only ask questions， you will sound like a policeman or a policewoman!

    How to keep a conversation going “Listen” carefully. In that way， you can get to know somebody well. When you know him or her well， you will have more to talk about.

    Then ask follow-up questions. After you “listen”， use what you “hear” to learn more about that person. Use “open ended” questions， such as “What do you think of …?” or “What was the most interesting experience ...?”

    Remember some basic rules for online language exchanges.

    Be patient. Do not try to find a good friend right away.

    Be careful. Don't give any personal information on the Internet， especially your address， telephone number， and even your real name.

    Endangered Wild Animals in China

Word Box: endangered 濒危 survivors 幸存者 giant 巨大的 mammal 哺乳动物 alligator 扬子  鳄 mussel 河蚌  reptile 爬行动物 

根据表格所提供的信息选择最佳答案。

    Have you ever dreamed about a trip to the space? Seeds (种子) of some vegetables and crops are a lot luckier than you, as they have travelled to space and back.

    China is among the three countries in the world that carry out agricultural research (农业研究) in space. The others are Russia and the US.

    Since 1987, China has sent about 1, 000 species of seeds into space.

    These include green peppers, tomatoes, cucumbers (黄瓜), carrots, lettuce and wheat. Even on China's first manned spacecraft Shenzhou—V, there were some seeds from Taiwan.

    "Conditions in outer space such as radiation (辐射) and low gravity can cause big changes in the seeds," said Chinese researcher Jin Xing.

    But not all seeds are better after going to space. After returning to the Earth, the best seeds are selected. These seeds produce (生产) much more and also grow faster than normal (正常的) seeds

    We all know that many inventions have changed our life a lot. They play important roles in our daily life. Here are some interesting inventions.