[单项选择]A stamp is just a piece with a picture and some words printed on one side and some glue on the other side. What makes one of these bits of paper worth any money at all What makes a ten-fen stamp worth ten fen
When you buy a stamp, you also buy service from the post office. You get the letter sent by post. After the stamp has done its work, the post office says it is worthless. You must buy a new one for each letter you send.
But people often pay money for stamps that have already been used. Stamp collectors have fun just trying to collect as many different kinds as possible. Certain kinds are hard to find. To get one of these uncommon stamps, some collectors are willing to pay a great deal of money. They think it is worth something, and that gives it value. If you collect stamps because they are especially beautiful or tell an interesting story or show all kinds of animals, then those are the ones that have value to you.
When you post a letter, you must buy ______ .
A. a ten-fen stamp
B. a new stamp
C. a twenty-fen stamp
D. a stamp worth 10 fen or more

[单项选择]A stamp is just a piece with a picture and some words printed on one side and some glue on the other side. What makes one of these bits of paper worth any money at all What makes a ten-fen stamp worth ten fen
When you buy a stamp, you also buy service from the post office. You get the letter sent by post. After the stamp has done its work, the post office says it is worthless. You must buy a new one for each letter you send.
But people often pay money for stamps that have already been used. Stamp collectors have fun just trying to collect as many different kinds as possible. Certain kinds are hard to find. To get one of these uncommon stamps, some collectors are willing to pay a great deal of money. They think it is worth something, and that gives it value. If you collect stamps because they are especially beautiful or tell an interesting story or show all kinds of animals, then those are the ones that have value to you.
The post office says the stamp is useless when _____
A. you buy it
B. you write a letter
C. put a letter into a postbox
D. it has a postmark on it

[单项选择]The little girl was so frightened that she just wouldn’t ______ her grip on my arm.
A. loosen
B. remove
C. relieve
D. dismiss

[单项选择]A simple piece of rope hangs between some environmentally friendly Americans and their neighbors. On one side stand those who have begun to see clothes dryers as wasteful consumers of energy (up to 6% of total electricity) and powerful emitters of carbon dioxide (up to a ton of CO₂ per household every year). As an alternative, they are turning to clotheslines as part of what Alexander Lee, an environmentalist, calls "what-I-can- do environmentalism."
But on the other side are people who oppose air-drying laundry outside on aesthetic grounds. Increasingly, they have persuaded community and homeowners associations (HOAs) across the U.S. to ban outdoor clotheslines, which they say not only look unsightly but also lower surrounding property values. Those actions, in turn, have sparked a right-to-dry movement that is pressing for legislation to protect the choice to use clotheslines. Only three states—Florida, Hawaii and Utah—have laws written broadly enough to protect cloth
A. Electricity consumption.
B. Air pollution.
C. Waste of energy.
D. Ugly looking.

[单项选择]Passage Three