题目

在下列各句的空格内填上一个适当的完整的单词，该词的首字母已给出。 1. Newton was sitting under an apple tree when an apple f          onto his head. 2. In my hometown, the weather of this summer is much h          than that of last summer. 3. Tom and Jerry r         their bikes to Uncle Ma’s Farm twice a month. 4. The mother cat was killed, and the baby cat had to live by i         . 5. Pass me that pair of glasses, please. I can’t see the words c         . 已知函数，其中a＞0． (1)求函数f(x)的单调区间； (2)若直线x－y－1＝0是曲线y＝f(x)的切线，求实数a的值； (3)设g(x)＝xlnx－x2f(x)，求g(x)在区间[1，e]上的最大值．(其中e为自然对数的底数)