In 1901, H. G. Wells, an English writer, wrote a book descri

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  • 7-8 BBD

    6. B 第二段最后一句是“月球人”提出的问题,现在人们正在考虑这一问题的可行性。

    7. B 从文中 “Underground systems are already in place.” “Many cities have underground car parks.” “Many cities have underground car parks.” 和 “The Chunnel, a tunnel connecting England and France, is now complete.” 三句话可知答案。

    8. D 短文提出了一个充分利用地下空间的问题:向地下发展。