One of the newest sources of alternative energy is also one of the oldest - water power. The 19th century water wheel, though, bears no resemblance to the 21st century contraptions powered by ocean waves. (1)___________________________to coalesce around one technology. Quite the opposite, in fact, unconventional ideas are blooming like algae along America's Pacific Coast.
The steady, powerful pounding of the ocean surf at this time of year is a reminder why marine energy developers love the Pacific Northwest. Huge waves crash against the jetties at the mouth of Tillamook Bay on the Oregon Coast. Columns of spray shoot in the air.
"(2)___________________________." Stephanie Thornton is the American program director for the upperly named Wave Energy AS. The Norwegian company is proposing to redesign jetties and breakwaters like these to include electricity generators built inside. "It's designed in such a way that it has open chambers on the wave facing side. And (3)___________________________this device, water fills these chambers and runs into the back where the turbine is. And basically it's very similar to a hydroelectric dam where water just flows through and drives a turbine."
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作者: susan.sui 时间: 2012-4-16 14:37
1. the wave energy sector had been slowed.
2.all the way energy potential is a very large share.
3.when the waves crash against作者: momosense 时间: 2012-4-17 00:06
作者: riverfeng 时间: 2012-4-17 09:58
我又回来做听力了，去年听力没过。
1、Wave energy is sollow
2、....very large here
3、When wave crash against作者: doudouky 时间: 2012-4-17 11:17 标题: HOHO~~
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