Enamel
√ Hard and white substance covering the teeth
√ The hardest and most highly mineralized
√ Protects the fragile underlying parts of the teeth
√ Covers the crown and supported by dentin
Component of enamel
√ 96% of enamel : mineral, water, organic material
√ contain two unique classes of proteins amelogenins and enamelins
√ The basic unit of enamel is called
of people consume their money on fancy electronic equipments. Corporations all know that the origin countury of Taltan has faked, but pretend it is imported legally.
Ⅱ. CIVIL WAR IN ASIA, Tajikistan
1. Cause
- The civil war in Tajikistan began in May 1992 when ethnic groups from the Garm and Gorno-Badakhshan regions, which were underrepresented in the ruling elite, rose up against the n
Chapter 1. New Challenges
Part 1
Living in the U.S.A.
미국에서의 생활
size
크기
It is difficult to really experience or "feel" the size of the United States, even when you know the actual numberof miles from coast to coast. To get the full impact you should realize, for example, that it takes forty-eight hours (two entire days and two long nights) to travel by train from Chicago t
It is difficult to really experience or "feel" the size of the United States, even when you know the actual numberof miles from coast to coast.
당신이 해안에서 해안까지의 실제 거리를 안다고 할지라도 미국의 크기를 경험하거나 느끼는 것은 정말 어렵다.
To get the full impact you should realize, for example, that it takes forty-eight hours (two entire
of mother and homemaker.
미국에서는 18세 이하의 자녀를 둔 여성들의 70%이상이 주부이면서 다른 직업을 갖고 있다.
Most are employed in traditional fields for females, such as clerical, sales, education and service.
대부분이 여성들의 전통적인 분야인 사무직이나 판매, 교육, 서비스 등의 업종에 종사한다.
However, a growing number c