单选题 This, they say, is proof that the more primitive species was not simply supplanted by an advanced one ______ into one.

【正确答案】 D
【答案解析】[注释]此题表面上看是搭配题目,not simply…but…,实质上是语义衔接题目,比较难;要从句子的意义上选择答案,而不只是结构搭配问题。