sc大全-補充045 (沒人問過! 跪求幫助)

      If industrial pollution continues to deplete the ozone layer, the resulting increase in ultraviolet radiation will endanger human health, causing a rise in the incidence of skin cancer and eye disease, and perhaps even threatening global ecological systems.

(A) and perhaps even threatening

(B) and may even threaten

(C) and even a possible threat to

(D) as well as possibly threatening（B）

(E) as well as a possible threat to

這題好像看似很容易的平行問題! 但我卻在A跟B掙扎好久.....最好選到了A......請問該如何選擇A跟B呢???  求求nn們來幫忙!

显然不能选A，因为causing现在分词修饰的是 endanger human health。而

threatening global ecological应该是连在 the resulting increase perhaps even threaten global.. 也就是 and may even threaten

所以您是說threaten是跟endanger平行囉？不能跟causing~是嗎？可是我的理解是will endanger...., causing...., and threatening是屬於分詞代替連接詞的平行模式～～這是我們台灣這兒的老師教的！例如：原本是～V1 and V2 可以改成 ving1, ving2(去掉and改成分詞加逗號）若原本是V1 (and) V2 ,and V3時～就可以改成　V1, ving2, and ving3      所以我這題著實做不出來！　請問平行是要靠句意判斷嗎？？　能再多討論討論嗎！　謝謝

还是要从意思上理解,