题目内容：

The first time I went for a walk around my father-in-law’s neighbourhood in America was Garbage Day,and I was shocked to see what people were throwing out.

It was back in 1981,and I saw many people gather in someone’s front yard.As I went nearer to see what was happening,I got my first introduction to yard sales.For the few dollars I had in my wallet,I was able to buy a seven-inch black-and-white portable TV.I also bought a flashlight.

The following weekend,at another yard sale,I saw a 14-inch colour TV being sold for almost nothing.I felt I could not miss the offer and bought it.Now I had two sets and couldn’t wait to see what else I could afford the next weekend.

Spring ended,and by then I had accumulated almost every type of electronic equipment I had always wished to have back home.

Then this new idea came to mind.I had heard about a man who travelled back home every few months.He drove a truck filled with boxes of new and used stuff that people were sending to relatives.So I told my father that I would send as many types of items as I could so that he could start his resale business.

Every few months I would gather several boxes of American “junk” televisions,toasters,fans,hair dryers,etc.and sent them home.As word got out about my father’s “trash” market,people all came to buy these things.

Three years later,when I visited my family for the first time since leaving home,I learned that many of the families in our neighborhood had a piece of “trash”.It proved that I had the responsibility to keep people back home in Guatemala up to date with the latest technology you no longer need.

1.According to the text,a yard sale is a place where people 　　　.

A. sell their front yards at a low price

B. sell unwanted things in their own yards

C. gather in someone’s yard to enjoy things

D. throw away their trash in someone’s yard

2.The author felt he could not miss the offer because 　　　.

A. the second TV set was bigger

B. the second TV set was a colour TV

C. the second TV set was very cheap

D. he wanted two TV sets very much

3.What did the author think of the “junk” he bought?

A. He thought they were valuable.

B. He thought they were not worth buying.

C. He was not surprised to see them thrown away.

D. He thought he could sell them for a good price.

4.From the passage we can infer that 　　　.

A. the author comes from a poor place

B. the author often goes home to sell the “junk”

C. the author buys the “junk” only to make profits

D. the “junk” is not welcomed in the author’s hometown