Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.

Creamoftartar酒石,aweakacid,canbeaddedtoeggwhitestohelpthemfoam泡沫whentheyarebeaten

The Native American interpreter Sacajawea was a valuable member of the Lewis and dark expedition in 1805.

Urban renewal programs strive to upgrade areas that are becoming slums.

In 1974 Henry Aaron broke Babe Ruth's monumental lifetime record of 714 home runs.