阅读理解。
When my family moved to America from a small village in Guangdong, China, we brought not only our
luggage, but also our village rules, customs and culture. One of the rules is that young people should
always respect elders. Unluckily, this rule led to my very first embarrassment in the United States.
I had a part-time job as a waiter in a Chinese restaurant. One time, when I was serving food to a
middle-aged couple, the wife asked me how the food could be served so quickly. I told her that I had
made sure they got their food quickly because I always respect the elderly. As soon as I said that, her
face showed great displeasure. My manager, who happened to hear what I said, took me aside and gave me a long lecture about how sensitive (敏感) Americans are and how they dislike the description "old". I
then walked back to the table and apologized to the wife. After the couple heard my reason, they
understood that the problem was caused by cultural differences, so they laughed and were no longer
angry.
In my village in China, people are proud of being old. Not so many people live to be seventy or
eighty, and people who reach such an age have the most knowledge and experience. Young people
always respect older people because they know they can learn from their rich experience.
However, in the United States, people think "growing old" is a problem since "old" shows that a
person is going to retire or that the body is not working well. Here many people try to keep themselves
away from growing old by doing exercises or jogging, and women put on makeup, hoping to look young. When I told the couple in the restaurant that I respect the elderly, they got angry because this caused
them to feel they had failed to stay young. I had told them something they didn't want to hear.
After that, I changed the way I had been with older people. It is not that I don't respect them any
more; I still respect them, but now I don't show my feelings through words.
1. Jack brought the couple their food very fast because .
A. the manager asked him to do so
B. he respected the elderly
C. the couple wanted him to do so
D. he wanted more pay
2. When Jack called the couple "elderly", they became .
A. nervous
B. satisfied
C. unhappy
D. excited
3. In Jack's hometown, .
A. people dislike being called "old"
B. people are proud of being old
C. many people reach the age of seventy or eighty
D. the elderly are the first to get food in restaurants
4. After this experience, Jack .
A. lost his job in the restaurant
B. made friends with the couple
C. no longer respected the elderly
D. changed his way with older people
5. Which of the following is TRUE?
A. The more Jack explained, the angrier the couple got.
B. Jack wanted to show his feelings through words after his experience.
C. The manager went back to the table and apologized to the couple.
D. From this experience, Jack learned more about American culture.
）和像的长度。然后，将物距依次增加2cm，重复上面的实验。实验数据如下表，根据表中的信息，回答下列问题：
在_____________范围时，在光屏上总成倒立放大的实像。
）最小时，成在光屏上的像的长度__ ______________发光体的长度。（填“大于”、“小于”或“等于”）。 
