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tal difficulties will not e from further advances in the same technologies that may have helped cause the problems. Where the real challenge lies, in the view of the new generation of scientists,is in finding ways to produce goods and meet the world39。s genius with high technology may have put men on the moon, but there is growing doubt about its ability to solve human problems closer to home. In fact, a slight but significant change from purely technological solutions is already under way as scientists insist that answers to the world39。boat pilot and later joined the shortly after that he became a this period, he started to write short he became a full time writer. In 1870, Mark Twain got the years that followed he wrote many books including Tom Sawyer in 1876, and Huckleberry Finn in 1884, which made him famous,and brought him great fortune. Unfortunately, Mark Twain got into debts in bad investments(投資 ) and he had to write large numbers of stories to pay these 1904, his wife died, and then three of his children passed_away. At the age of 70, his hair was pletely bought many white suits and wore nothing but white from head to foot until his death on April 21,1910. 1. In his childhood, Mark Twain________. A. learned a lot at school B. often went swimming with other boys C. troubled his parents D. often played games with other boys 2. Which of the following shows the right order about Mark Twain? a. He became a miner. b. He worked as a printer. c. He got into debts. d. His father died. e. He became a full173。t like to go to school, and he often ran away from always went in the direction of the nearby Mississippi(密西西比河 )