【简答题】设f(x)是定义在R上的奇函数,且对任意实数x,恒有f(x+1)=f(1-x).当x∈[0,2]时,f(x)=2x-x 2 . (1)求证:f(x)是周期函数; (2)当x∈[2,4]时,求f(x)的解析式; (3)f(1)+f(2)+f(3)+…+f(2013).
【单选题】孟懿子与孟武伯、子游同问孝,但孔子回答不同,说明孔子()的教育观。
【单选题】According to the text, which of the following is not necessarily true?
A.
Excluding theory, economics is a short-sighted science.
B.
theory is only properly applied when future decisions are considered.
C.
Maximization is a goal that can only be achieved in the long-term.
D.
theory leads managers to make correct decisions with the application of economics.
【单选题】设f(x)是定义在R上的函数,且对任意实数x,恒有f(x+2)=-3f(x).当x∈[0,2]时,f(x)=2x-x 2 .则f(0)+f(-1)+f(-1)+…+f(-2014)=( )
【简答题】The Supreme Court is composed of ____ Justices who are appointed for life by ____ with consent of Congress in the U.S.
【多选题】教学活动就其本质而言,是一种特殊的认识活动,是因为( )。
【单选题】According to the text, which of the following is NOT true?
A.
American food only includes hamburgers, hotdogs and pizzas.
B.
Chicago is known for thick crust and stuffed pizzas.
C.
When you are not happy, eat the delicious food and everything is gone.
D.
When you share the food with others, you will fi nd happiness is so .
【简答题】Directions:Read the following statements and mark Y (for Yes) if the statement agrees with the information given in the text; N (for No) if the statement contradicts the information given in the text;...
【多选题】教学活动就其本质而言,是一种特殊的认识活动,是因为