如图,小红作出了边长为1的第1个正△A1B1C1,算出了正△A1B1C1的面积,然后分别取△A1B1C1三边的中点A2,B2,C2,作出了第2个正△A2B2C2,算出了正△A2B2C2的面积,用同样的方法,作出了第3个正△A3B3C3,算出了正△A3B3C3的面积…,由此可得,第2014个正△A2014B2014C2014的面积是( )
当你想要询问别人的生日是什么时候时,应该如何问: A.When do you have breakfast? B.When is your birthday?
--- ___ they taking a picture? --- Yes, they are. A. Am B. Is C. Are
Can I speak ___John? A. for B to C. on
Kate ____ playing chess. A. am B is C. are
_____season do you like best? A. Which B. What C. How