environmental damage is done, it takes many years for the ecosystemto recover． [ ] A．Even if B．If only C．While D．Once 题目和参考答案——青夏教育精英家教网—

题目内容

________ environmental damage is done, it takes many years for the ecosystem(生态系统)to recover．

[　　]

A．Even if

B．If only

C．While

D．Once

答案：D
提示：

句意为：“一旦环境遭到破坏，需要好多年才能恢复生态系统。”

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　　It’s not the flashiest car in the world．Not even close．But the 1971 Volkswagen named Helios can do something most cars can’t ：run on solar energy－energy from the sun’s light and head!

　　Joshua Bechtold, 14,and the other students at the Riverside School in Lyndonville, Vermont, worked many months to get Helios ready．They named their car after Helios, the sun god in Greek mythology(神话)．

　　The 4-year-old Tour de Sol encourages the use of “green”, or environmen-tally friendly, cars to help reduce pollution and save energy．It’s not a race．Cars are judged on fuel efficiency(耗油量)rather than speed．In the week-long event, 44 cars took the 350-mile tour from Waterbury, Connecticut, to Lake George, New York．Of the 23 student cars, Helios was the only one built by middle school students．

　　A teacher drove Helios, but the children talked with people wherever they stopped along the road．“That was my favorite part,” says Anna Browne,15．“We explained how the car runs．”

　　Due in part to old, inefficient batteries(电池)，Helios finished fourth－out of four－in its kind, the sun-powered class．“We were there for the fun of it,” Anna says, “We’re proud of Helios,”says Ariel Gleicher, 14．“It’s a car that’s good for the environment．”

(1)

What is special about the car Helios in the text?
[　　]
A．	It was built by middle school students．
B．	It has an attractive design．
C．	It was made in 1971．
D．	It won the fourth prize．

(2)

How many sun-powered cars took part in the race?
[　　]
A．	1
B．	4
C．	23
D．	44

(3)

What would be the best title for the text?
[　　]
A．	The Making of Helios．
B．	1999 American Tour de Sol．
C．	Sun-powered Gars on the Road．
D．	Use of Green Cars in Connecticut．

(4)

The students felt proud of Helios because ________．
[　　]
A．	it could run as far as 350 miles
B．	it was favored by many children
C．	it had high-quality batteries
D．	it was driven by clean energy

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