Johnny Smith was a good math student at a high school. He loved his computer. He came home

Johnny Smith was a good math student at a high school. He loved his puter. He came home early every day, then he worked with it till midnight. But Johnny was not a good English student, not good at all. He got an F in his English class. One day after school Johnny joined his puter to the puter in his high school office. The school office puter had the grades of all the students: the math grades, the science grades, the grades in arts and music, and the grades in English. He found his English grade. An F! Johnny changed his English grade from an F to A. Johnny’s parents looked at his report card. They were very happy.  “An A in English!” said Johnny’s Dad. “You’re a very clever boy, Johnny.”
Johnny is a hacker (黑客). Hackers know how to take information from other puters and put new information in. Using a modem (调制解调器), they join their puters to other puters secretly. School headmasters and teachers are worried about hackers. So are the police, for some people even take money from bank puter account (账户) and put it into their own ones. And they never have to leave home to do it! They are called hackers.
【小题1】Johnny changed his English grade with the puter in     .A．the classroomB．the school officeC．his own houseD．a bank near his house【小题2】When Johnny’s parents saw the report, they were happy because     .A．Johnny was good at mathB．Johnny loved putersC．Johnny could join one puter to anotherD．they thought Johnny was not poor in English any longer【小题3】Who are worried about hackers in the story? A．Johnny’s parents.B．School headmasters, teachers and the police.C．The police.D．School headmasters and teachers.【小题4】What should the hackers know well, do you think, after you read this story?A．Information.B．Grades.C．Computers.D．Back puter accounts.【小题5】The last paragraph is about     . A．JohnnyB．putersC．hackersD．modemC