阅读理解。 In the doctor's waiting room, people are sitting on their chairs. Bob, a schoolboy is among them. They all look very sad except Bob. He is reading an exciting story in a magazine. The doctor called 'The next ! ' and Bob runs into the doctor's waiting room. 'What's your trouble?' says the doctor. Before Bob says a word, the doctor makes him lie down on a bed, ' Now, let me  listen to your heart. 'Bob tries to speak, but the doctor tells him not to say anything. '61'II take your temperature. ' Bob tries to sit up, but the doctor stops him. After a moment, the doctor says, 'Well, boy, you don't have a fever.  In fact there's nothing wrong with you. ' 'I know there isn't. ' says Bob.  'I just come here to get some medicine for my father. ' 1. Bob sits in the waiting room to . A. see the doctor B. wait for his father C. read his magazine D. buy some medicine 2. All the sick people look sad except Bob because . A. Bob was too young to worry about anything B. his father isn't very ill C. he is reading the magazine D. there's nothing wrong with him 3. Which of the following is TRUE according to the passage? A. The doctor is careless. B. There is no nurse in doctor's room. C. The doctor is warm-hearted. D. The doctor takes Bob for a sick person. 4. When examing Bob, the doctor might think that . A Bob is funny B. Bob is naughty C. Bob is foolish D. Bob is very ill