354
치아 관리는 어릴 때부터
Healthy teeth are meant to last a lifetime. Daily cleaning is important to preventing infections and other problems.
352
번지 점프
Imagine standing at the edge of a tall bridge. Hundreds of meters below you, river water rushes by. You take a deep breath and jump off the bridge, head first into thin air.
350
봄에는 앞으로 가을에는 뒤로
Americans continued to set their clocks one hour ahead in the spring and one hour back in the fall. They remembered to do this with the expression: "Spring ahead and fall back."
348
운좋은 오리
This story is about a brown female Canadian duck that weighs only four hundred fifty grams. The duck had flown to the southern state of Florida for the winter.
346
스타벅스
If you are in any major city in America, the chances are high that you are not far from a Starbucks. In fact, you might be very close to several of these coffee stores.
345
아기의 지능과 조기 교육
Not long ago, many people believed that babies only wanted food and to be kept warm and dry. Some people thought babies were not able to learn things until they were five or six months old.
343
햄버거의 원조는?
Many restaurants in the United States say hamburgers are their most popular food. But no one really seems to know who made the first one.
337
트랜스 지방
New York City wants to fight fat. The Board of Health has passed a ban on trans fats in all restaurants.
335
애견 조련사
Americans own about seventy-three million dogs. Many people have problems training their animals. Some are turning to dog expert Cesar Millan.
334
보석 세공
Ancient peoples who lived near the ocean used the shells of sea creatures to make jewelry. Other ancient peoples used materials like small colored rocks and animal bones and teeth.