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课程与PC端同步更新，充分利用零碎时间。做题
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网校名师24小时在线答疑解惑直播
名师大咖面对面，有问有大收获多。91. Those urban planners who are blind to this point will pay a heavy price， which they cannot afford it.那些城市的规划者们如果忽视这一点，将会付出他们无法承受的代价。
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92. There is a growing tendency these days for many people who live in rural areas to come into and work in city. This problem has caused wide public concern in most cities all over the world.农民进城打工正成为增长的趋势，这一问题在世界上大部分城市已引起普遍关注。
93. An investigation shows that many emigrants think that working at city provide them with not only a higher salary but also the opportunity of learning new skills.一项调查显示许多民工认为在城市打工不仅有较高的收入，而且能学到一些新技术。
94. It must be noted that improvement in agriculture seems to not be able to catch up with the increase in population of rural areas and there are millions of peasants who still live a miserable life and have to face the dangers of exposure and starvation.必须指出，农业的发展似乎赶不上农村人口的增加，并且仍有成千上万的农民过着缺衣挨饿的贫寒生活。
95. Although rural emigrants contribute greatly to the economic growth
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