400-600-1123
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答案：
B
题目意思是
它的存活与否取决于它是否可以怎么怎么样...，表示是否用whether,而不用if,排除A；选项C whether or not用词错误，应该是whether，排除C; ability for用词错误，做某事的能力应该是ability of doing sth. 排除DE。 
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