根据短文内容，选择最佳答案。
One day an Indian went to his doctor. The doctor looked him over and said, "Medicine ( 药)won't
help you. You must have a good rest. Go to a quiet place for a month, go to bed early, drink milk, walk
a lot, and smoke( 吸) only one cigar ( 烟) a day. "
A month later the Indian came to see the doctor again. "How are you?"said the doctor, "I'm glad to
see you again. You look much younger. " "Oh, doctor, I feel quite well now!"said the Indian. "I had a
good rest. I went to bed early, I drank a lot of milk. I walked a lot . You certainly helped me. But you
told me to smoke one cigar a day, and that one cigar a day almost killed (杀死) me at first. It was no joke
to begin smoking at my age. "
1. One day an Indian _____.
A. wasn't feeling well
B. went to see a friend
C. felt very tired
D. went to his doctor and helped him
2. His doctor _____.
A. could not help him
B. was good to him
C. told him what to do
D. was glad to see him
3. When the Indian came to see the doctor again _____.
A. the Indian was younger
B. the doctor was not free
C. the Indian felt quite well
D. the doctor looked him over
4. The Indian told the doctor _____.
A. he liked doing all those things
B. he almost killed him
C. to smoke one cigar a day
D. one cigar a day was very difficult at the beginning
5. From this story we can guess _____.
A. the Indian was not a young man
B. the doctor was very interesting
C. the doctor was a good one
D. the Indian didn't smoke at first
=10，x=0.08。可以得出汽车的速度为0.4公里/分钟、自行车速度为0.24公里/分钟。设发生故障后，汽车的原预定时间为t分钟，则有0.4×10+0.24×(t-10+20)=t×0.4，t=40，则从家到单位的距离为s=0.4×40=16(公里)。