Underground systems are already in place． Many cities have underground car parks．In some cities，such as Tokyo，Seoul and Montreal，there are large underground shopping areas．The“Chunnel”，a tunnel（隧道）connecting England and France，is now complete．

But what about underground cities？Japan''s Taisei Corporation is designing a network of underground systems，called“Alice Cities．”The designers imagine using surface space for public parks and using underground space for flats，offices，shopping， and so on．A solar dome（太阳能穹顶）would cover the whole city．

Supporters of underground development say that building down rather than building up is a good way to use the earth''s space．The surface，they say， can be used for farms，parks，gardens，and wilderness．H．G．Wells''“moon people”would agree． Would you？

56．The explorers in H．G．Wells''story were surprised to find that the“moon people” ________ ．

A．knew so much about the earth B．understood their language

C．lived in so many underground cities D．were ahead of them in space technology

57．What does the underlined word“it”（paragraph 2）refer to？

A．Discovering the moon''s inner space． B．Using the earth''s inner space．

C．Meeting the“moon people”again． D．Traveling to outer space．

58．What sort of underground systems are already here with us？

A．Offices，shopping areas，power stations．

B．Tunnels，car parks，shopping areas．

C．Gardens，car parks，power stations．

D．Tunnels，gardens，offices．

59．What would be the best title for the text？

A．Alice Cities—cities of the future B．Space travel with H．G．Wells

C．Enjoy living underground D．Building down，not up

B

LONDON（Reuters）—Organic fruit，delivered right to the doorstep．That is what Gabriel Gold prefers，and he is willing to pay for it．If this is not possible，the 26-year-old computer technician will spend the extra money at the supermarket to buy organic food．

“Organic produce is always better，”Gold said．“The food is free of pesticides（农药），and you are generally supporting family farms instead of large farms．And more often than not it is locally（本地） grown and seasonal，so it is more tasty．”Gold is one of a growing number of shoppers buying into
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