本题答案缺失，烦请好心人指点迷津

Clouds are formed from the evaporation of the oceans’ water that is warmed by the Sun and rises high into the atmosphere, condensing in tiny droplets on minute particles of dust.

1. Clouds are formed from the evaporation of the oceans’ water that is warmed by the Sun and rises high into the atmosphere, condensing in tiny droplets on minute particles of dust.

2. Clouds form by the Sun’s warmth evaporating the water in the oceans, which rises high into the atmosphere, condensing in tiny droplets on minute particles of dust.

3. Warmed by the Sun, ocean water evaporates, rises high into the atmosphere, and condenses in tiny droplets on minute particles of dust to form clouds.

4. The water in the oceans evaporates, warmed by the Sun, rises high into the atmosphere, and condenses in tiny droplets on minute particles of dust, which forms clouds.

5. Ocean water, warmed by the Sun, evaporates and rises high into the atmosphere, which then condenses in tiny droplets on minute particles of dust to form as clouds.

我觉得A比较讨人欢喜。。。

C也不错，但仿佛句子重心发生偏移。。

我觉得选c，意义没有偏移而且很对称。

a中 Clouds are formed from the evaporation of the oceans’ water that is warmed by the Sun这是句子的第一部分，wordy and awkard

b,d,e,逗号后面是which看到就排除了

弱弱问一句 逗号后面是which为什么排除啊

(a)还有另一个问题：从句子看，云是由一整个过程形成的，不单只是蒸气，还要蒸汽condense，但是（a）的选项表达的是云是由水蒸气形成的，而后面一系列的过程都只是形成水蒸气的ocean water 的定语和伴随动作。不知道我的理解对不对。

个人觉的选C.A中的分词会有修饰歧义.that的修饰也有问题:如果修饰water，表述的意思是“那些被光照加热的升入空气中的水的蒸发”，这明显illogical。正如LS所说，句子表述的意思是云形成的过程，而C则很清楚的表达了这个意思。

open to discuss....