补充250-186 没人问过~~汗...大家给看看吧

186.
                The utility company has announced that it will permanently close its Unit I nuclear power plant, the first plant that had been built by private industry and the model for a generation of modern nuclear reactors.

(A) that had been built by private industry and

(B) built by private industry and which was

(C) to be built by private industry and which was

(D) built by private industry and（D）

(E) to have been built by private industry and was

又是个没人问过的题,汗...大家给看看我这又是哪没掌握好

我在AD间徘徊了很久,咋一看觉得A中and两边不平行,没有D的两个词平行好,可是仔细想想,又觉得build的动作应该发生在announce之前,最后选回A,然后错了,这样看来,是因为同位语结构中不用管动作与谓语动词间的关系么???

之前是现在完成时（ has announced ）

之后的用A的过去完成时似乎没有必要

D的分词形式的修饰似乎更好些，D的同谓语并列是不是更好些呢

这个是定语从句的省略 答案D

The utility company has announced that it will permanently close its Unit I nuclear power plant, the first plant （that had been） built by private industry and（which was） the model for a generation of modern nuclear reactors.

现在完成时后面使用过去完成时这样的定从不合适吧

我觉得这道题选D 因为D最简洁 其他选项都存在and前后平行结构不当 C是to do 结构修饰错误

至于定从中省略的时态问题 我又想了想 用一般过去式好些 

“过去完成时一定要与一个确切的过去时间的某一点并用，进行比较或可用来表示一个动作在过去对另一动作之前已发生”－lzm 

这里好象没有必要用过去完成时

个人觉的是分词修饰整句的同谓语the plant

这里的过去分词和the model for a generation of modern nuclear reactors.这样一个同谓语性质的修饰结构的并列

open to disscuss

这里就应该是过去分词作定语~与后面同位结构平行~~同意gonghao

这也是开始选D的原因,结果后来迷糊的看错了时态~~