不错哦 “In those cases, one less irrigation saved more than all the cost of remote sensing data,” she states．“Both irrigation and satellite remote sensing data are expensive．But then again many farmers are used to working together as a group．They are used to sharing．I’m hoping they could do the same with remote sensing data — purchase one scene over a large area to cover many farms, which would further reduce the cost．” 46．What does Moran think is the problem with farmers? A． Over-used reservoirs． B．Precision farming． C．Irrigation researches． D．Over-irrigation． 47．How can farmers get the new information about their crop? A．To reschedule irrigation as required． B．To watch weather changes regularly． C．To use remote sensors as researchers suggest． D．To use scientific models since computing is more reliable． 48．What do farmers check upon when they decide how much water each crop needs? A．Profitability B．Remote sensors C．The cost D．Air temperature 49．What’s the purpose of Moran introducing the study she carried out in Arizona? A．To investigate the use of remote sensing data． B．To support whether her viewpoint in the previous paragraph．is right C．To show how farmers can reap a harvest． D．To criticize those farmers who used too much water． 50．What is among the best possible ways to help save farmers’ money? A．Changing irrigation B．Sharing sensing data C．Buying one computer D．Extending the farms． C Some people believe that international sport creates goodwill between the nations and that if countries play games together they will learn to live together．Others say that the opposite is true: that international contests encourage false national pride and lead to misunderstanding and hatred．There is probably some truth in both arguments, but in recent years the Olympic Games have done little to support the view that sports encourage international brotherhood．Not only was there the incident of tragedy involving murder of athletes, but the Games were also ruined by lesser incidents caused principally by minor national contests． One country received its second-place medals with visible anger after the hockey final．There had been noisy scenes at the end of the hockey match, the losers objecting to the final decisions．They were convinced that one of their goals should not have been disallowed and that their opponents’ victory was unfair．Their manager was in a rage when he said; “This isn’t hockey．Hockey and the International Hockey Federation are finished．” The president of the Federation said later that such behavior could result in the suspension of the team for at least three years． The American basketball team announced that they would not yield first place to Russia, after a disputable end to their contest．The game had ended in disorder．It was thought at first that the United States had won by a single point, but it was announced that there were three seconds still to play．A Russian player then threw the ball from one end of the court to the other, and another player popped it into the basket．It was the first time the US had ever lost an Olympic basketball match．An appeal jury （评审委员会） debated the matter for four and a half hours before announcing that the result would stand．The American players then voted not to receive the silver medals．
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