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【单选题】

A supermarket in Wales suddenly began selling a lot of _____.

A.
diesel fuel
B.
fried food
C.
vegetable oil
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【单选题】Kits to modify the engine to use the oil from restaurants cost _____.

A.
about twenty dollars
B.
several hundred to several thousand dollars
C.
under a hundred dollars

【单选题】One way colleges in the United States do NOT use recycled cooking oil is _____.

A.
to heat dorms and buildings
B.
to operate campus equipment like lawn mowers
C.
to run bus shuttle services

【单选题】A university in England is trying to use recycled oil to _____.

A.
develop hydrogen
B.
generate electricity
C.
power local transportation

【单选题】Los Baños is hoping to promote the recycling of cooking oil into fuel by _____.

A.
implementing local ordinances
B.
planning an ad campaign
C.
providing money for new projects