(　 ) 46. When Mrs. White was calling Tom, he was _______.

A. lying in bed reading a book   B. on the computer with a dragon

C. standing in front of the screen of the computer

D. playing computer games in his bedroom

(　 ) 47.From the passage we know that the story happened _______.

A. before Tom went to school in the morning B. before Tom went to bed at night

C. just as the dragon jumped and shouted

D. after Tom had slept for some hours in the evening

(　 ) 48. Tom was very excited because _______.

A. he had a radio detector in his computer

B. he was worrying about the infected disks

C. he had nearly beaten the dragon in computer game

D. his mother came upstairs to ask him to go to bed

(　 ) 49.Which of the following is true according to the passage?

A. Tom liked playing computer games

B. Tom enjoyed playing with real dragons

C. Tom hated tapping on the keyboard

D. Tom hated teaching his mother how to play the computer