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简答题 GRE

2012-10-11

Morels are related to cup fungi，but they are both more anatomically complexand more widely____________for their flavor．

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答案解析

B．F
The mushrooms are not just sought(choice A)；they are valued(choice B) or prized(choice F)．

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3 根据以下内容回答题
In 2007．Mether Iones published anarticle on “theethanol effect，”showing tlle negativeramifications of switching from foreign oil to corn—based ethanol．It
pointedout that over lust five years，tlle amount of corn used for ethanol had
Linerisenfrom 7 percent to 20 percent．That led to a rise in the price of corn，which(5)inturn led to a rise in food prices．Since so much cornwas used to manufacture ethanol，less was exported．This meant less corn on the global market and the potential of anincrease in global hunger．Ironically，the production of corn requires a great deal of gasoline fortractors and harvesters，reducing the energy savings tobelow that of gasoline．
Consider each of the choicesseparately and select all that apply．
According to the passage，what are some negatives involved in switchingfrom foreign oil toethanol?

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