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流行病学的研究范围是
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描述性流行病学与分析流行病学的区别在于
Switzerland is a land well-known for its beautiful 1._____. When people think of Switzerland they often think of mountains and mountain 2._____. But Switzerland is more than a land of mountains. It is a country of highly 3._____ and hardworking people. The Swiss are able to produce goods that do not need huge amounts of 4._____ materials. Most of the raw materials used in their industries are 5.______ from other countries. As Switzerland has no sea 6.______, it has to pay heavily for imported raw materials which have to be sent over long 7._____. For this reason, the Swiss are interested only in producing precision products like watches, cameras, and other types of goods which make use of their skill and 8._____. The well-known Swiss watch industry is a good example of this. Small 9._____ of raw materials are used but a great deal of skill and 10.______ is needed to produce a little item with so many 11. ______ parts.
【单选题】唐代诗人(------)所作的《走笔谢孟谏议寄新茶》,描述诗人饮茶一碗至七碗时的不同体验。“一碗喉吻润”“两碗破孤闷”“三碗搜枯肠”“唯有文字五千卷”。
【单选题】唐代诗人(------)《一字至七字诗:茶》写出了茶与诗人、僧人的缘分,以及烹茶、赏茶的过程和感受。
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