【正确答案】
D
【答案解析】[听力原文]
As the world population grows, there is a need for more food—including seafood.
The World Bank predicts that by 2030, 70 percent of the demand for fish will come from Asian countries. The World Resources Institute recently studied world fish production. The group says fish production needs to more than double by the middle of the century to meet that demand. It says the world"s oceans, lakes and rivers are fished to their limit, and it says more fish must be produced in aquaculture projects or fish farms.
One such farm is operating in the California Community of Imperial. Imperial is 26 kilometers north of the border with Mexico. Craig Elliott is part owner of Imperial Catfish.
"We"re the largest catfish farm this side of the Mississippi... the largest catfish farm in California,
" said Craig Elliott. Mr. Elliott says that his business ships thousands of kilograms of fish every week to Asian grocery stores. Many people who go to those stores want to buy live fish. "In fact, we can"t really produce enough fish for the demand," Elliott said.
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