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标题: PREP #44 [打印本页]

作者: 云游 时间: 2013-1-6 18:04
标题: PREP #44

Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth's interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes.

(A) and producing energy on a commercial scale, enough for efficient generation of electricity and heating

(B) and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat

(D) to produce energy on a commercial scale, enough for generating electricity efficiently and for heating

(E) to produce enough energy on a commercial scale for efficient generation of electricity and heat

请教一下，选项E错在哪里？谢谢！

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