Passage 1  Ian Guppy smiles broadly in his sunny backyard. "Point in any direction," he says, "and you'll find junk." The 46-year-old engineer is midway through framing a ten-by-ten-foot greenhouse, m

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Passage 1  Ian Guppy smiles broadly in his sunny backyard. "Point in any direction," he says, "and you'll find junk." The 46-year-old engineer is midway through framing a ten-by-ten-foot greenhouse, made almost entirely of castoffs.  "How many shovels have you collected?" asks his wife, Elizabeth Peirce.  Guppy walks into his workshop, where there are different types of snow shovels, some so new their stickers are still on. And inside the house are more second-hand items, including a suitcase. The couple found most of these goods within four blocks of their home. For them, it's not necessarily about saving money. "I could afford to buy a suitcase:" Peirce says. "But sometimes I see things and they're crying out to be pulled from the trash. There's just so much out there that's too good to waste."  In Halifax, roughly 64,000 tons of residential curbside (马路边) waste is collected annually, While citizens such as Peirce and Guppy are helping to reduce the amount of waste, the city government is also taking action. The city now holds biannual "Curbside Giveaway Weekends," when residents put out items they no longer want. Similar events are held across Canada.  Another venue for exchanging junk is Fre cycle.org, an international online network where members can connect with others in their communities and offer up used items they want to give away, or make requests for specific goods. Hayley Paquette, a 22-year-old student in Guelph, furnished her apartment almost completely through Free cycle and garage sales. Her motivation to make use of used goods is financial, but also practical.  People who are reusing others' castoffs enjoy other benefits as well. "Because I don't spend a whole lot of money on material possessions," says Wayne Groszko, a renewable-energy researcher, "I actually gain the freedom of not having to work quite as much. And that's pretty important to me."  In 2008, Groszko found a freezer on the street with a sign on it saying that it worked. He got out his bicycle trailer and took the castoff home. Today, he uses the freezer to store local fruit that he'll eat in the winter. "I don't see the point in buying lots of new stuff," Groszko says. "I don't believe it contributes to our overall happiness."  Helen Spiegelman, coordinator of Zero Waste Vancouver, thinks Groszko's sentiment will become more common as global resources gradually decline and the costs of oil and consumer goods soar. Then, says Spiegelman, our own goods-from out-of-fashion bags to used hockey skates-will become more valuable to us and to others.What is Ian Guppy doing at the beginning of the passage?

A.He is sorting out junk.
B.He is designing a frame.
C.He is examining his castoffs.
D.He is building a greenhouse.
正确答案D
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