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  3. The Interstate Highway System The Interstate Highway System in the US has almost 70,000 kilometers of roads. / The highwa

The Interstate Highway System The Interstate Highway System in the US has almost 70,000 kilometers of roads. / The highwa

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答案 The Interstate Highway System The Interstate Highway System in the US has almost 70,000 kilometers of roads. / The highway passes through different areas / that are wetlands, mountains and deserts. / The interstate system links every major city in the United States. / It also links the United States with Canada and Mexico. / The Interstate Highway System has been an important part of the nation’s economic growth / during the past 40 years. / Experts believe that trucks using the system / carry about 75 percent of all products that are sold. /
解析                                                                                            州际公路系统
       美国州际公路系统全长近70000公里，公路穿越湿地、山地和沙漠等不同的地方。州际公路除了连接美国各主要城市外，也把美国与加拿大、墨西哥连接了起来。在过去40年间，州际公路系统对美国经济增长起着重要的作用。专家认为，在该公路系统上运行的卡车，运载着美国销售商品总量的75%左右。
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