阅读下列短文，从每题所给的A 、B 、C 三个选项中选出最佳答案。
The story is about a young student. She worked very hard at her lessons She worked so hard that
she became ill. She couldn't go to sleep at night. But when she got up the next morning, she felt very tired.
So she went to see a doctor. Hearing the student's, the doctor said, "You are too stressed out. You
must eat more yin foods like vegetables and tofu. Besides (此外), you can try to count (数) numbers
when you are lying in bed. By the time you reach one thousand (千), you will be asleep (入睡). I'm sure
of it." The next day, the student came to see the doctor again. "Well," said the doctor, "How are you
feeling today?"
The student still liked tired. "Yes," she said. " I tried to count one, two, three, four... up to one
thousand. But when I reached five hundred and sixty, I feel sleepy. I had to get up and drink some coffee
so that (以便) I could go on counting up to one thousand . But then I still couldn't be asleep.
1. Why couldn't the young student go to sleep?
A. She was worried about her lessons.
B. She always couldn't finish her homework.
C. She worked too hard and became ill.
2.What did the doctor ask the young student to do?
A. To eat more yin foods and count numbers when she was lying in bed in the evening.
B. To exercise more in the morning.
C. To do more reading.
3. What did the young student do after she felt sleepy?
A. She fell asleep.
B. She got up to have some coffee.
C. She listened to some music.
4. What made the girl unable (不能) be asleep during the night after she went to see the doctor?
A. The doctor's advice.
B. The coffee.
C. The student's illness.
5. If you are a doctor, what will you ask the girl to do?
A. I will ask her not to do so much homework.
B. I will ask her to go to bed earlier.
C. Both A and B