GWD3-TN2-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.

A.     
may include melting the polar ice caps and a rising sea
level

B.      
may include the melting of polar ice caps and the
rising sea level

C.     
may include polar ice caps that are melting and sea levels
that are rising

D.     
include melting the polar ice caps and sea levels that are
rising

E.      
include melting of the polar ice caps and a rise in sea
level

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it's wierd that the answer is E. i chose B. who can help me? thanks!

B中possible和may重复，the melting of polar ice caps 中心词是melting，the rising sea level中心词是sea level,两者不对等。

E正确，melting 和rise对称，两者都是动作性名词。