题目内容：

Some inventions are so useful, but seem so simple, that we wonder why no one thought of them long ago.

Post-it Notes were invented about twenty years ago by Art Fry, a scientist at 3M Company. The idea for the product came from an awful experience he often had while singing in his church choir. Fry used pieces of paper as bookmarks to mark the places in his book of songs, but these bookmarks were always falling out. Around that time, Fry heard about a new adhesive (粘合剂) that a colleague, Dr. Spence Silver, had created. This adhesive was special because it was strong enough to hold papers together, but not strong enough to tear the paper when it was removed.

A short time later, Fry realized that his new invention had even more uses than being a great bookmark. He came to this realization when he wrote a note on one of his new “bookmarks” and attached it to a report he was going to give to a colleague. Soon, co-workers were asking Fry for more of his invention so that they could use the new type of notes themselves.

Fry and some other people at 3M believed so much in the new product that they asked the company to give away thousands of the “sticky pieces of paper” for trial use. When some salespeople at 3M went to offices and showed workers just how helpful the new type of notes could be, they immediately received many orders. As more and more people discovered how useful Post-it Notes could be, the product took off.

1.How did Dr. Spence help Art Fry?

A. His adhesive made Art’s invention possible.

B. He offered the new adhesive to Art.

C. He created the Post-it Notes.

D. He often worked and discussed science with Art.

2.Which of the following is a possible use of Post-it Notes?

A. A postcard from abroad.

B. An ad in a newspaper.

C. A note on a friend’s door.

D. An e-mail to a friend.

3.Which of the following shows the proper order of the events?

a. The company gave away many “sticky pieces of paper” for people to try.

b. Dr. Spence created a new adhesive.

c. Many orders were received and the Post-it Notes became successful.

d. Fry invented Post-it Notes.

e. His colleagues began to use the new types of notes themselves.

A. d b a e c      B. b a e d c

C. b d e a c  D. d e a b c

4.In which column of a newspaper can we read this passage?

A. Economy B. Recreation C. Culture   D. Science