A．To set up a family business.

　　B．To do a science experiment.

　　C．To realize his childhood dream.

　　D．To bring electricity to his family.

　　D　[推理判断题。由第一段中的"have no electricity or running water"可知，威廉生活的地方非常苦；再由第二段解释风车的作用"good sources of electricity"以及第四段描述威廉设计的第一个风车的功效"powered ...lights"可知，他做风车的初衷是给家里发电。]

　　2．What was William's mother's attitude toward his building a windmill at first?

　　A．Hopeful.　　　 B．Worried.

　　C．Doubtful. D．Uninterested.

　　C　[推理判断题。由第三段中的"a lot of people laughed at him，including his mother"可知，一开始妈妈不看好威廉能做出风车。]

　　3．What can we learn about William's first windmill?

　　A．It was sold at a high price.

　　B．It was made of thrown­away things.

　　C．It could bring water up from underground.

　　D．It looked the same as the photos in Using Energy.

　　B　[细节理解题。由第三段中的"He didn't have the parts and equipment that he saw in the book's pictures.So he looked for parts in junkyards to build his machine."可知，威廉的第一个风车是由废弃的东西做的。 ]

　　4．Which of the following can best describe William?

　　A．Honest. B．Humorous.

　　C．Self­centered. D．Strong­minded.

D　[推理判断题。由第三段描述很多人嘲笑威廉做不成风车，但他却仍然充满信心，以及最后一段中他鼓励人们不要放弃梦想"Whatever happens，don't give