短文：盐与新陈代谢

摩天大楼与环境

Skyscrapers and Environment ConnecticutIn the late 1960’s,many people in North America turned their attention to environmental problems,and new steel-and-glass skyscrapers were widely criticized...

短文：警察与社区

Police and CommunitiesPolice and Communities Few institutions are more important to an urban community than its police, yet there are few subjects historians know so little about. Most of the ea...

活出个性

Food for thoughtIn the eternal universe, every human being has a one-off chance to live---his existence is unique and irretrievable, for the mold with which he was made, as Rousseau said, was bro...

背诵美文——感冒与年龄

Colds and AgeA critical factor that plays a part in susceptibility to colds is age. A study done by the University of ichigan School of Public Health revealed particulars that seem ...