"I'm sorry to trouble you."

"______."

[    ]

　　A. All right　　  B. OK

　　C. Not at all　　 D. You are welcome

阅读理解

　　Mr Smith, an expert of medicine, was very strict(严格的) with the students. Every time he took the chair on the exam committee(担任考试委员会主席), the students would be worried, for he was seldom pleased with their answers. A student would be lucky enough if he or she could receive a good mark(分数) from him. Now a student came into the exam room and sat before the committee. This student was a little nervous as he knew it would not be so easy for him to pass the exam.

　　The student was asked to describe an illness. His answer was OK. Then Mr Smith asked about the cure(疗法) for the illness, and the student, too, gave a quick answer. “Good,” said Mr Smith, “and how much will you give the patient(病人)?” “A full spoon,” answered the student.

　　“Now you may go out and wait for what you can get,” said Mr Smith. At the same time the committee discussed the answers the student had given. Suddenly the student realized that there was something wrong with his last answer. “A full spoon is too much,” he thought to himself. Very worriedly he opened the door of the room arid cried, “Mr Smith, I've made a mistake. A full spoon is too much for the patient. He can take only five drops(滴).” “I'm sorry, boy,” said Mr Smith coldly. “But it's too late. Your patient has died.”

l．Why were all the students afraid of Mr Smith?

[　　]

A．Because he was always strict with them.

B．Because he often laughed at them when they were in trouble.

C．Because he never listened to them carefully when they answered his questions.

D．Because he often misunderstood(误解) them and gave them bad marks.

2．What does the underlined word “seldom” in the passage mean?

[　　]

3．Before he left the room, the student was almost sure that ________.

[　　]

A．he hadn't done well in the exam

B．he had made a mistake in the exam

C．his answer to the last question was wrong

D．he had passed the exam and the only thing was to wait for the result

4．From the passage we can learn that the patient would ________.

[　　]

A．be safe in taking only five drops at a time

B．be in trouble if he took five drops at a time

C．be all right soon if he took one full spoon at a time

D．be not well again without the student's help

5．We can guess that the student ________.

[　　]

A．received a good mark at last

B．failed the exam at last

C．passed the exam at last

D．would be no longer afraid of Mr Smith from then on ________.