题目

Gregor Mendel who was the first ______ that many characteristics of a plant _______ from one generation to another had a deep love of nature． A．to find; pass about                                B．finding; passed away C．found; passed by                                 D．to find; passed on 答案：D已知函数， （1）求函数的单调递增区间； （2）若不等式在区间（0,+上恒成立，求的取值范围； （3）求证：