Fire was one of the earliest major technological advances for humankind, providing heat, protection, and cooked food (which is much easier to cat and digest).
出自-2014年6月阅读原文
Many policy measures to control obesity(肥胖症)assume that people consciously and rationally choose what and how much they eat and therefore focus on providing information and more access to healthier foods," note the two researchers.
出自-2013年6月阅读原文
providing good education for baby boomers
出自-2012年6月阅读原文