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The ligers, born on May 2, 2005 , are named 'Ping Ping' and 'An An', which together translate as 'safe and sound'. Their mother Huan Huan is a six-year-old tigress and their father is a four-year – old lion named Xiao Erhei. The couple first gave birth to a liger in June 2004 but the cub (幼兽) died of respiratory(呼吸的)failure 72 hours later. The pregnancy (怀孕) rate for lion-tiger couples is only between one and two percent and the cubs normally have a short life expectancy due to the differences in their chromosomes(染色体). Zoologists say only six to eight ligers are living in the world. China's first tiger-lion hybrid cub was born at Hongshan Zoo in Nanjing, capital of east China's Jiangsu Province, in 2002. But it died a week later. Ping Ping and An An have broken the survival record set by a liger who lived for 113 days at Hongshan Zoo. 63. Why can Ping Ping and An An become superstars? A. Because they are the most beautiful ligers. B. Because they are the cleverest ligers. C. Because they are the most attractive ligers. D. Because they are the first ligers to live for a year. 64. Why can't ligers live long ? A. Because their chromosomes are different. B. Because they are too small when they are born. C. Because their parents don't live long. D. Because they are short of food. 65. How many ligers did the passage mention? A. Three. B. Four. C. Five. D. Six. 66. What is the best title of this passage? A. China's longest living twin ligers celebrate their lst birthday B. Why can't ligers in the world live long C. How to raise ligers safely D. The story behind the ligers D Second Life is a 3D, online world in which computer users can create a new self and live a different life. Second Life is one of the most popular new online games. But unlike other games, Second Life is not about winning or losing. Second Life is technically a computer game. But people involved in it do not consider it a game because the players create everything. Second Life is more for socializing and creating communities. Users of Second Life are called residents. To take part, they must create an avatar, or an electronic image of themselves. Some avatars look like humans, while others look like animals or imaginary creatures. Inside the Second Life world, residents live in different versions of themselves. They build homes, run businesses, buy and sell things, work, play, and attend school. They even have relationships and get married. Second Life was created in 2003 by Linden Lab in San Francisco, California. Linden Lab controls the Website where the ever-changing world is being created. There are now about one million people around the world who are active in Second Life. The number has grown quickly since the beginning of the year when there were about one hundred thousand users. The average age of people involved with Second Life is about thirty. However, Linden Lab recently created Teen Second Life for younger users. Second Life has its own economy and its own money, called Linden dollars. Millions of dollars are made and spent each month in Second Life. Users can enter Second Life for free. But they must pay for a membership if they want to own land or buy and sell goods and services. Recently, several major companies have become involved with Second Life. They wanted to be part of the growing business world that exists within the made-up reality. 67. What’s special about the game “Second Life”? A. It’s a game about losing and winning. B. It creates everything in life. C. It benefits one’s abilities to socialize and create. D. It is simply a popular game to kill time. 68. What does the underlined word “avatar” mean? A. An instrument someone uses.B. A picture someone takes. C. An imaginary identity of someone. D. A weapon used in Second Life. 69. Which is NOT true about the game “Second Life”? A. A resident in Second Life lives a life somewhat like that of real life. B. The number of users of Second Life is about ten times as large as that of 2003. C. You can’t enter Second Life until you pay for the entrance fee. D. To own possessions, a resident has to pay to be a member of Second Life. 70. Why do some big companies want to join in Second Life? A. They want to experience life in the made-up reality. B. They want to promote their products more widely. C. The want to be a member of Second Life. D. They want to build agencies in Second Life. E (责任编辑：admin) |