【文章內(nèi)容簡介】 had no railroad (鐵路 ). If Lamu took a bus, it would take her a long time to reach Beijing. And a plane ticket would cost lots of money. However, things changed for Lamu. She was able to buy a ticket to the world’s highest railroad. The QinghaiTibet Railway had been pleted! The 1,142kilometer railroad runs on the QinghaiTibet plateau (高原 ). Lamu could reach Beijing by train in 48 hours! About 550 kilometers of the railroad are constructed on the frozen earth (凍土 ). When the frozen earth warms in summer, it can move the track. But Chinese scientists have built a special structure to solve the problem. The QinghaiTibet Railway has been designed with the wild animals in the designers’ minds. It also has special underpasses (地下通道 ) for animals like Tibetan antelopes (藏羚 羊 ) to go through. “ The new railroad greatly helps Tibet’s tourism, ” said Liu Yueqin, an expert at the Chinese Academy of Social Sciences (中國社科院 ). As more tourists take trains to Tibet, there are more money for Tibetans. With the money, more kids can go to school. The railroad also makes things less expensive in Tibet. Now one can buy a TV set for about 1,500 yuan. It used to be much higher than that price. When there was no railroad, it had been difficult to send things in and out of Tibet. With the new railroad, shopping can be more convenient (方便的 ) and faster. 根據(jù)短文內(nèi)容，選擇正確答案。 ( ) special underpasses are _____ to go through. for Tibet’s antelopes Tibet’s tourism animals Tibetans ( ) of the following about the QinghaiTibet Railway is TRUE? is not the highest railroad in the world. ’s the longest railroad in the world. have no way to solve the problem of the frozen earth. animals have special underpasses to go through. ( ) the new railroad was pleted _____. could buy a cheaper TV set can do business in and out of Tibet and develop their tourism and more people could fly to Tibet as soon as possible and more animals would be killed by people ( ) the railroad was finished, _____. Tibetan children could go to school transportation in Tibet was convenient and fast, too was hard for Tibetans to buy and sell things in and out of Tibet Tibetans had never walked out of Tibet ( ) best title (標題 ) of the passage is “ _____” . about a 12yearold Tibetan Girl Beijing from Tibet by Train in Fortyeight Hours (高科技 ) Brings the Tibetans Happiness Railway Puts Tibet Closer (C.) We have always been interested in the moon. 2, 000 years ago, people already knew it moves around the earth and where it would be in the sky at different times of the year. At that time, everything about the moon was learned by watching it carefully in the sky. When scientists could use telescopes to study the moon more closely, their ideas began to change. They could see the moon was made of rocks. Most scientists thought moon rocks would be different from those on the earth. This was because they believed the moon had once been a pla that had been caught in the earth’s gravity millions of years earlier. In 1969, moon rocks were finally brought to the earth and studied. Much to their surprise, scientists found that, except for water, the moon and the earth were made of the same things. Once again new ideas were needed for this new information. After years of study, most scientists now think that the moon was once part of the earth. They believe very early in its history, maybe 4 billion years ago, something about the size of Mars hit the earth. This sent billions of rocks into space around our pla. These rocks slowly joined together and after many years became the moon. In the future, even though our ideas