113. Analysts blamed May’s sluggish retail sales on unexciting merchandise as well as the weather, colder and wetter than was usual in some regions, which slowed sales of barbecue grills and lawn furniture.

(A) colder and wetter than was usual in some regions, which slowed

(B) which was colder and wetter than usual in some regions, slowing

(C) since it was colder and wetter than usually in some regions, which slowed

(D) being colder and wetter than usually in some regions, slowing（B）

(E) having been colder and wetter than was usual in some regions and slowed

我记得在比较时间状语的时候，不是应该要把比较的部分补全吗？比如：United States have more population than 100 years ago. 就不对，应该说United States have more population than it had 100 years ago. 为什么这里就可以直接说then ususal?

有点糊涂了，请NN指点……

也糊涂了

是不是关键在于B里面的Which

没有which, wet & cold 是不是也可以指unexciting merchandise 啊？

1.than usual是个固定的省略形式,另外好像还有两个,在白勇的书上看到过,具体不记得了,一时也找不到在哪.

2.比较从句是可以省略一些重复成份的,比如,主语相同可以省略,be动词相同可以省略,主谓如果都相同可以一起省略只保留介词短语和副词.等等.就算不是固定省略形式,这里的省略也符合以上规则啊

再问大全113：d 选项如果排除usually的问题，D选项的being否代替which,which是否存在指代不明，关于which 的问题一直不太明白:which指代前面一句话的时候不行，指代最近的名词就可以吗？望高手指教！