I used to love science class—all of them—biology,chemistry,geography, physics.I think Iliked those classes because I felt that it helped meunderstand what the world works.For example,whenI was a child,the rain was a...I used to love science class—all of them—biology,chemistry,geography, physics.I think Iliked those classes because I felt that it helped meunderstand what the world works.For example,whenI was a child,the rain was a mystery(奥秘).In oneclass,I learned it rained.I think science classesclear up mysteries.But then there is always展开更多
Would you like to spend your holidays traveling by ballon? The first balloon trip took place in France in 1783. It was lasted for only 8 minutes. About a year years late, an American and a Franchman decided to cross t...Would you like to spend your holidays traveling by ballon? The first balloon trip took place in France in 1783. It was lasted for only 8 minutes. About a year years late, an American and a Franchman decided to cross the Channel by a balloon. High over the Channel, they discovered a hole on the balloon. The hole became bigger and bigger. The gas keeping the balloon up was escaped. The men threw all their belongs into the water make the balloon lighter. It started to rise higher agai, but it was still too close to water.展开更多
文摘I used to love science class—all of them—biology,chemistry,geography, physics.I think Iliked those classes because I felt that it helped meunderstand what the world works.For example,whenI was a child,the rain was a mystery(奥秘).In oneclass,I learned it rained.I think science classesclear up mysteries.But then there is always
文摘Would you like to spend your holidays traveling by ballon? The first balloon trip took place in France in 1783. It was lasted for only 8 minutes. About a year years late, an American and a Franchman decided to cross the Channel by a balloon. High over the Channel, they discovered a hole on the balloon. The hole became bigger and bigger. The gas keeping the balloon up was escaped. The men threw all their belongs into the water make the balloon lighter. It started to rise higher agai, but it was still too close to water.
