Q19:

Possible long-term consequences of the “greenhouse effect,” the gradual warming of the Earth’s climate, may include melting the polar ice caps and a rising sea level.

1. may include melting the polar ice caps and a rising sea level
2. may include the melting of polar ice caps and the rising sea level
3. may include polar ice caps that are melting and sea levels that are rising
4. include melting the polar ice caps and sea levels that are rising
5. include melting of the polar ice caps and a rise in sea level

为什么选E不选B啊？E中的melting是名词还是分词？是名词少了定冠词，是动词和后面不并列啊！请NN指点

不要只看所给的答案，整体分析才是重要的解题思路；第一个单词给出了

possible，如果再用may，构成冗余。。。。。