题干

甲、乙两人计划徒步旅行世界,甲计划沿0°纬线旅行一圈,乙计划从北极出发沿0°经线到南极.在理想情况下(  )

A:甲、乙两人行程相同

B:甲的行程约是乙的2倍

C:乙的行程约是甲的2倍

D:甲、乙两人的行程无法确定

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B

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     World Book Day falls on April 23 every year. It was set up by the UNESCO(联合国教科文组织) in 1995 to encourage people, especially teenagers, to discover the pleasure of reading. It is also the day to honor great writer, for example, William Shakespeare, born or dead on that day.
       Many countries celebrate World Book Day. Take UK as an example. On that day, millions of school children can buy books of special price, a much lower price than usual, in any bookstore. It has been done every year since 1998. World Book Day is also celebrated in China. Premier Wen Jiabao does lots of reading every day. Wen has called on people to do more reading. He suggested that young people should spend more time reading. “Book cannot change the world, but people can change the world by changing themselves through reading,” he said.
    Why do people like reading? One big advantage is that reading helps us become more knowledgeable and more intelligent. Also, reading helps us to follow the latest developments of science and technology. Besides, reading gives us information about other cultures and places of the world. When we read, we may find many things that are unfamiliar to us. We would have to use our brain to think about them or do more reading to find out the answers. The more we read, the more we know. What's more, reading is also one of the most important ways to learn a foreign language like English.
   “Reading makes a full man”. Books, magazines, newspapers and other kinds of materials can help us to know more about the outside world and perf