282
가을 단풍
Leaves on many trees change color in autumn. But why?
280
꿈의 신비
Do you dream? Do you create pictures and stories in your mind as you sleep? Today, we are going to explore dreaming. People have had ideas about the meaning and importance of dreams for hundreds of years.
278
OK
“OK” means “all right” or “acceptable.” It expresses agreement or approval. Millions of people all over the world use the word “okay.” In fact, some people say the word is used more often than any other word in the world.
259
휴가 보내기
Americans do many different things during their vacations. Some people stay at home and enjoy time with their families. They may go to a local swimming pool, zoo or museum.
258
알래스카
The United States bought that land in eighteen sixty-seven, during the administration of President Andrew Johnson. When Russia offered it for sale, Secretary of State William Seward quickly prepared a treaty of purchase.
257
수족관
For thousands of years, people have wanted to explore the world under the sea. Such activity was not possible until modern times. Today, divers can survive for hours underwater and photograph fish and other sea creatures.
255
설탕 음료
These days, about half of all drinks sold in American schools are sugary soft drinks like Coke and Pepsi. Opponents have fought these sales for years.
253
일류대학 들어가기
College admissions officers give a number of reasons for the higher rates of rejection letters this year. They say the main reason is that high school seniors are applying to more schools than in the past.
249
만화
Cartoons can make us think, they can make us laugh, they can make us cry. Cartoons can make a difference in how we look at life.
247
영재의 두뇌
Scientists have found that brain growth in very intelligent children is different from that in other children. They say their study is the first to show a link between intelligence and brain development.