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　　There has been great enthusiasm in the United States for reducing fossil fuel dependence by increasing production of biofuels from crops such as corn and switchgrass, but this (i)_____ about biofuels potential should be (ii)_____ by a realistic appraisal of the costs and challenges of biofuel production.

　　Blank (I)Blank (II)

　　A：forbearance D：tempered

　　B：exuberance E：delineated

　　C：obduracy F：exacerbated

　　答案：BD

　　Our mass media are much more fascinated by bad ideas or the failure of good ones than by successes: we drown in bad news--tales of how things went wrong--but we have only the most____ discussion on how they might go right.

　　A：Incisive

　　B：Tantalizing

　　C：Trenchant

　　D：Cursory

　　E：Illusory

　　F：perfunctory

　　答案：DF

　　For parents, the pleasure of letting children choose which book to read aloud together is not always____ : I well remembered my inner groans when my child would constantly pick my least favorite book from the shelf.

　　A：intangible

　　B：enduring

　　C：impalpable

　　D：unalloyed

　　E：ephemeral

　　F：unqualified

　　答案：DF

　　My grandma has a strong belief in all things ______: she insists, for example, that the house in which she lived as a child was haunted.

　　A：clamorous

　　B：invidious

　　C：numinous

　　D：empirical

　　E：sonorous

　　答案：C

　　Having regarded Marcus relationship to their boss as entirely _____, Jo was flabbergasted when Marcus publicly made clear his objections to some changes the boss was introducing.

　　A：professional

　　B：sycophantic

　　C：prosaic

　　D：dissident

　　E：collegial

　　答案：B

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