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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
(e) is incorrect.
because
(a) the logical parallelism is between generating electricity and heating homes/factories. therefore, any construction that creates parallelism between elements other than these is incorrect.
or
(b) the parallelism in the original choice, which makes sense and therefore must be followed, is between those two things. therefore, any answer choice putting other elements in parallel constitutes an unacceptable change in meaning.
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