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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
这里heat前先不管for补不补，平不平行，这里的heat一定是n词性，这样才能跟generation平行，但是这样的话，跟后面的名词就就不上了，heat（n）factories，无意义。
所以一定要是v，d选项中正确
①我把producing和mining视为平行的两个部分→这是第二次栽进这个坑了，当有前面后两个动词时，and后面的并列如果没有其他介词做指示，应该与第一动词平行，例如：A.have succeed for the first time in mining and produce;或者B.have succeed for the first time in mining and in producing·····
②我把enough视为modify electricity，然后不足够挨近electricity而排除答案→这不是主要考点，不考虑
正确的逻辑思路
③又由于to do比for更好，由此排除A/B/C
④考虑第二个and的平行，D正确，E，heat不应与produce并列，逻辑错误（这个点其实要求对句意的理解）
A generation 与heating不平行
E efficient generation与heat不平行
我在开始做题的时候，想的却是一个句子没有逗号，一个句子有逗号。觉得有逗号容易错
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
应该平行的对象是generating electricity and heating homes/factories
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.