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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
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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