Mr Clarke works in a middle school. He likes reading and often  1  some books from the library. He keeps  2  to the radio every morning and reading  3  after supper. So he knows much and teaches well. His  4  worship（崇拜）him very much. Mike, Mr Clarke's little son，is only nine. He  5  likes reading books. And he often asks his father some questions. Mr Clarke always thinks he's too  6  to understand him and chooses_ 7  ones to answer. Of course the boy is not satisfied with（对…满意）it．

　　One day Mike read  8  about the electric lights（电灯）and was  9  　 it．When his father told him to do some housework，he went on thinking of it．He asked him  10  questions，and his father answered all．Then his father said proudly，"Fathers always know  11  than sons!"

　　The boy thought for a while and said，"  12  !"

　　"Oh? Why?"

　　Mike didn't answer and asked，  13  ，"Who invented the electric lights?"

　　"  14  ."answered Mr Clarke．

　　"Why didn't his father invent them，then?"

　　Looking at his son，Mr Clarke didn't know  15   to answer !

　　(    )1. A. finds        B. sells        C. buys       D. borrows

　　(    )2. A. watching    B. listening    C. going       D. touching

　　(    )3.A. newspapers    B. letters        C. stories       D. messages

　　(    )4.A. teachers        B. parents    C. students    D. classmates

　　(    )5. A. also        B. never        C. even        D. only

　　(    )6. A. old        B. young        C. clever        D. able

　　(    )7. A. more ifficult    B. the most difficult

　　C. easy        D. the easiest

　　(    )8. A. everything    B. nothing    C. something    D. anything

　　(    )9. A. worried about    B. interested in

　　C. afraid of        D. angry with

　　(    )10.A. few        B. little        C. a few        D. a little

　　(    )11.A. more        B. most        C. less        D. least

　　(    )12.A. So do I    B. Neither am I    C. I agree    D. I don't think so

　　(    )13. A. instead    B. carefully    C. quickly    D. brightly

　　(    )14. A. Thomas Brown    B. Allan Smith

　　C. Thomas Edison    D. Ron Jenkins

　　(    )15. A. when        B. what       C. where       D. which