Scientists at the Los Alamos NationalLaboratory have succeeded for the first time in mining heat
from the Earth's interior and producingenergy on a commercial scale, enough for efficient generation of electricity and heating factories and homes.
(A) and producing energy on a commercialscale, enough for efficient generation of electricity and
heating
(B) and producing enough energy on acommercial scale for electricity to be generated efficiently
and to heat
(C) for energy production on a commercialscale, enough for generating electricity efficiently and to
heat
(D) to produce energy ona commercial scale, enough for generating electricity efficiently and for
heating
(E) to produce enough energy on acommercial scale for efficient generation of electricity and heat B中producing和mining平衡，后句tobe generated 和 to heat 平衡，为何不选？作者: Gabby308 时间: 2012-2-29 19:06
