ＰＲＥＰ４４，盼解答

44.   (26787-!-item-!-188;#058&002971)

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.

(A) and producing energy on a commercial scale, enough for efficient generation of electricity and heating

(B) and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat

(C) for energy production on a commercial scale, enough for generating electricity efficiently and to heat

(D) to produce energy on a commercial scale, enough for generating electricity efficiently and for heating

(E) to produce enough energy on a commercial scale for efficient generation of electricity and heat

 the key is B,我有疑问，不　是说ＯＮＬＹ的位置不能动吗？

谢谢解答

好奇怪，ONLY在哪呀

我怎么没看到

A: and没有平行的对象

B: 同上

C: production不如produce表达的清楚；for generating 和 to heat 不平行

D: correct

E: generation 不如generating 表达的清晰；and heat应该和for平行而不是和to produce