涂在手上的酒精比涂在手上的水干得快，壶中的水比壶中的食用油干得快…小明猜想：液体蒸发的快慢可能与液体的种类有关．

（1）为此，小明用一根两端开口的直玻璃管、塑料板、电子手表、笔、温度相同的水、大豆油和酒精设计了如下实验方案：

A．在玻璃管上端附近化一标记线，并将下端竖直插入水中，直到管内水面到达标记线

B．用手指堵住玻璃管上端管口，将玻璃管从水中取出

C．将玻璃管移到塑料板上方，放开手指，让水滴滴在塑料板上并开始计时，

D．用同样的方法先后取出大豆油和酒精滴在塑料板上并计时；

E．记录液滴变干所用的时间t，得出结论．

When I went shopping yesterday, I ____ my motorbike ____ .

   About 21,000 young people in 17 American states do not attend classes in school buildings.
   Instead, they receive their elementary and high school education by working at home on computers. The center for Education Reform says the United States has 67 public “cyberschools(网络学校)” and that is about twice as many as two years ago.
   The money for students to go to a cyberschool comes from the governments of the states where they live. Some educators say cyberschools receive money that should support traditional public schools. They also say it is difficult to know if students are learning well.
Other educators praise this new form of education for letting students work at their own speed. These people say cyberschools help students who were unhappy or unsuccessful in traditional schools. They say learning at home by computer ends long bus rides for children who live far from school.
   Whatever the judgment of cyberschools, they are getting more and more popular. For example, a new cyberschools called Commonwealth Connections Academy will take in students this fall. It will serve children in the state of Pennsylvania from ages five through thirteen.
Children get free equipment for their online education. This includes a computer, a printer, books and technical services. Parents and students talk with teachers by telephone or by sending emails through their computers when necessary.
   Students at cyberschools usually do not know one another. But 56 such students finished studies at Western Pennsylvania Cyber Charter School recently met for the first time. They were guests of honor at their graduation.