The weather was perfect. We were just out for a picnic. When lunch time came, we decided to go and get something to eat, and meet back on the grass.
Susan and I headed for a hot dog stand  (摊)  . We watched the seller put together the hot dog. But when Susan took out her money, the man surprised us. "It looks a little overdone," he said, "so you don’t have to pay me. " We said our thanks,joined our friends, and began to enjoy our food. But as we talked and ate, I noticed a man sitting alone, in dirty clothes. I could tell that he hadn’t had a bath for days. Another homeless person, I thought.
We finished eating but when Susan and I went to throw away the lunch bag, I heard a voice ask, "there isn’t any food in that bag, is there?"
It was the homeless man. I didn’t know what to say. "No, I ate it already. " "Oh, really? " was his only answer. He was obviously very hungry.
I felt bad for him, but I didn’t know what to do. Suddenly Susan said, "I’ll be right back. Please wait for me a minute. " I watched curiously (好奇地) as she went across to the hot dog stand. Then I realized what she was doing. She bought a hot dog, crossed back, and gave the man the food.
When she came back to us, Susan said simply,  "I was just passing on the kindness that someone gave to me. "
That day I learned how generosity can go farther than the person you give to. By giving, you teach others how to give also. You never know what happiness a simple act of care will bring.
The correct order of the following things is ________.
a. Susan bought a hot dog for the man.
b. We went for a picnic.
c. We met a hungry man.
d. We had the hot dog for free.

A．abcd

B．badc

C．bdca

D．bcad

The underlined word "generosity" means_____________.

A．the fact of being happy

B．the feeling of pity for others

C．the idea of loving each other

D．the act of giving

What does the writer want to tell us by telling us the story?

A．Few people don’t know that a simple act of care will bring a lot of happiness.

B．A simple act of care will bring more happiness than you can imagine.

C．People know how much happiness a simple act of care will bring.

D．A simple act of care will never bring us any happiness.