如图四个电场中，均有相互对称分布的a、b两点．其中电势和场强都相同的是（   ）

一物体做匀变速直线运动，下列说法中正确的是（   ）

① Where does she live? ____     A. It's on December 25th．

② How's the weather in December? ____     B. I ride a bike in the park．

③ What do you do at weekends?  ____     C. It's cold and dry．

④ When is the Christmas Day? ____     D. She lives in Beijing．

⑤ Who is he?____     E. He's Father Christmas．