Sam's history teacher was asking him some questions． However， none of his answers was correct． So the teacher began to ask him some very simple questions， hoping that he could give at least one correct answer．

    "Sam， what is Waterloo？"

    "Waterloo？" said the boy． "Oh， it is a kind of washing machine， I think．"

    The teacher shook her head． "Sam， be serious， please． Now tell me the answer to a very， very easy question． Who was George Washington？"

    "Well，" the answer came quickly， "he must be the man who uses that washing machine．"

    The teacher was a little angry， but she didn't give up． She thought and thought， and then she came up with the easiest question． "Who's the president of the United States right now？"

    "Sorry， I don't know，" Sam answered．

    The teacher lost her temper． She shouted， "Donald Trump!"

    Sam looked around and sat down．

    "Stand up!" cried the teacher． "I didn't tell you to sit down．"

    Sam stood up． He looked puzzled． "Oh， I'm sorry，" he said． "I thought you were calling the next student．"

（1）What did Sam think "Waterloo" was？　　

A．A place．

B． A person．

C． A washing machine．

（2）How many questions did the history teacher ask Sam？　　

A． Four．

B． Three．

C． Two．

（3）The underlined expression "lost her temper" probably means　　 in Chinese．

A． 勃然大怒

B． 晕过去了

C． 结巴了

（4）From the passage， we know　　．

A． Sam is a lazy student

B． Sam is a funny student

C． Sam isn't good at history

（5）The teacher would be　　 after she heard Sam's last words．

A． crazy

B． very happy

C． satisfied