皮皮学，免费搜题
登录
搜题
【简答题】
Birds are widely believed to have ________ ________ dinosaurs.(由...进化而来)
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】设函数y=f（x）的定义域为D，若对于任意x 1 ，x 2 ∈D且x 1 +x 2 =2a，恒有f（x 1 ）+f（x 2 ）=2b，则称点（a，b）为函数y=f（x）图象的对称中心．研究并利用函数f（x）=x 3 -3x 2 -sin（πx）的对称中心，可得 f( 1 2012 )+f( 2 2012 )+…+f( 4022 2012 )+f( 4023 2012 ) =（ ）
A.
4023
B.
-4023
C.
8046
D.
-8046
【简答题】已知0＜a＜b，若函数 f(x)=2x+ 1 x 在[a，b]上单调递增，则对于任意x 1 ，x 2 ∈[a，b]，且x 1 ≠x 2 ，使 f(a)≤ g( x 1 )-g( x 2 ) x 1 - x 2 ≤f(b) 恒成立的函数g（x）可以是（ ） A． g(x)=1- 1 x 2 B．g（x）=x 2 +lnx-2 C． g(x)=-2x- 1 x D． g(x)= e x (2x+ 1...
【单选题】Teenagers do not want their parents to approve of whatever they do because they______.
A.
have already been accepted into the adult world
B.
feel that they are superior in a small way to the adults
C.
are not likely to win over the adults
D.
have a desire to be independent
【判断题】Porperty loans do have certain features which make them very attractive to banks.
A.
正确
B.
错误
【简答题】The result of inaction to your loans is to bring about bigger loans.
【简答题】How do people get into massive loans and debts?
相关题目：