单词拼写（7分）
【小题1】 If you have a ppreference for Impressionist paintings, you can go to Museum of Modern Art.
【小题2】As they had no children of their own, they aadopted an orphan.
【小题3】The car accident has done ppermanent damage to his leg, and he will never be able to walk.
【小题4】There is no cconcrete evidence showing the relationship between H7N9 and the dead pigs in Huangpu River.
【小题5】After 30 years’ struggle, China has been ttransformed from an under-developed country to the second biggest economy in the world.
【小题6】I am willing to do anything in eexchange for my freedom.
【小题7】The woman waited for her husband at the mountaintop year after year and eeventually became stone.
【小题8】We should not hold pprejudice against homosexuals, for it is just a personal choice.
【小题9】If you do the same thing over and over again, you begin to do it aautomatically .
【小题10】The human activities have seriously threatened the eexistence of many species.
【小题11】Some environmental activists aadvocated that nuclear energy should be massively developed to replace the traditional sources of energy.
【小题12】Some scientists still believe that global warming is just a natural pphenomenon .
【小题13】The UN has already bbanned the use of nuclear weapons in the war.
【小题14】Galileo put forward the heliocentric theory and made great ccontributions to our understanding of the universe.
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解析：
【小题1】preference 名词偏爱preference;构成固定词组have a preference for…偏爱…
【小题2】adopted 动词adopt收养；还可以表示“采纳，采用”。
【小题3】permanent形容词永久的permanent。其反义词为temporary暂时的。
【小题4】concrete 形容词实在的，有力的；
【小题5】transformed 动词转换，转变transform；本句是一个被动语态的形式。
【小题6】exchange 固定搭配in exchange for…交换…。
【小题7】eventually 副词最后eventually，相当于finally， in the end.
【小题8】prejudice 名词偏见prejudice，要注意该词通常与介词against连用。
【小题9】automatically 副词自动地automatically。注意构词法automatically.
【小题10】existence 名词存在existence,是由动词exist转换。
【小题11】 advocated 动词提倡advocate，这些环境专家建议大量使用核能。
【小题12】 phenomenon 名词现象pehnomenon，注意其复数形式为pehnomena。
【小题13】banned 动词禁止ban，该词固定词组ban sb from doing sth禁止某人做某事。
【小题14】 contributions 固定搭配make contributions to…对…做出贡献。