【简答题】One Sunday a few of us decided to take advantage of the first sunny day we’d have for ages to take a trip down to the coast to visit the penguins again. Last time I went down there was a couple of mon...
【单选题】All the students are looking forward to the first ________to take the College Entrance Examinations.
【简答题】What examinafions must children take first before going to university in the man’s country?
【简答题】设函数f(x)=e x +sinx,g(x)=ax,F(x)=f(x)﹣g(x). (1)若x=0是F(x)的极值点,求实数a的值; (2)若x>0时,函数y=F(x)的图象恒在y=F(﹣x)的图象上方,求实数a的取值范围.
【单选题】旅游产业被誉为21世纪的朝阳产业,近几年来,随着我国人民生活水平的提高,收入增加,外出旅游消费已成为人们生活的重要组成部分。这说明引起旅游消费热的主要原因是()
【单选题】若f(x)=ax,设f(x)+f(y)=f(z),则z=
【判断题】旅游是发展经济,增加就业很满足人民增加日益增长的美好生活需要的有效手段,旅游业是提高人民生活水平的重要产业。
【判断题】旅游是发展经济,增加就业和满足人民日益增长的美好生活需要等待有效手段,旅游是提高人民生活水平的重要产业。