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题库 / Prep2007E1-SC-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.
and producing energy on a commercial scale, enough for efficient generation of electricity and heating
and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat
for energy production on a commercial scale, enough for generating electricity efficiently and to heat
to produce energy on a commercial scale, enough for generating electricity efficiently and for heating
to produce enough energy on a commercial scale for efficient generation of electricity and heat
a选项后面 generation of electricity and heating factories and homes， electricity和heating factories and homes不平行，同时mining heat 和producing energy不应该是平行关系，应该是具有一定的因果关系，所以排除
b同理
c后面enough for generating electricity efficiently and to heat不平行，同时前面用for不是特别好，因为第一次挖出来热能会影响到后面的有效采集，用不定式控制力应该更强
d，不定式用的正确， enough for generating electricity efficiently and for heating平行，完美答案
e，前面不定式没问题，后面for efficient generation of electricity and heat不平行，排除
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