标题: Ron 大神语法笔记总结中的一道题 [打印本页] 作者: rq7777777 时间: 2016-10-12 09:55 标题: Ron 大神语法笔记总结中的一道题 [size=12.000000pt]Ron 大神语法笔记总结中的一道题
[size=12.000000pt]Scientists at the Los Alamos National Laboratory have succeeded for the first
[size=12.000000pt]time in mining heat from the Earth's interior and producing energy on a
commercial scale, enough for efficient generation of electricity and heating
[size=12.000000pt]factories and home.
[size=12.000000pt]A. and [size=12.000000pt]producing energy on a commercial scale, enough for efficient generation of
[size=12.000000pt]C. for energy production on a commercial scale, enough for generating electricity
efficiently and to heat
[size=12.000000pt]D. to produce energy on a commercial scale, enough for generating electricity
efficiently and for heating
[size=12.000000pt]E. to produce [size=12.000000pt]enough [size=12.000000pt]energy on a commercial scale for [size=12.000000pt]efficient [size=12.000000pt]generation of