短文:警察与社区
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科学60秒:吃一堑,长一智
"One of the things that amazed me was when we brought business people back to say, ‘What don’t we teach you in school,’ these were physicists who became business people.We didn’t teach studen...
环境保护:地球日当天华盛顿呼吁使用低耗油车
环境保护:地球日当天华盛顿呼吁使用低耗油车On this Earth Day, Washington is calling for more fuel-efficient cars and trucks. The standards would require new vehicles to average 31.6 miles per gall...
健康:某些人群必需优先注射猪流感疫苗
健康:某些人群必需优先注射猪流感疫苗An American government panel has recommended that pregnant women, health-care workers, children and young adults up to the age of 24 should get priority for th...
晨读美文057
晨读美文The time is now near at hand which must probably determine whether Americans are to be freemen of slaves; whether they are to have any property they can call their own; whether their ho...