题目

请根据材料内容选择最佳答案。 Hello! My name is Mark Brown. I am in Shanghai,China now. I am a student in a middle school. I like green and blue. I have a bluecup. I have two friends. One is Liu Wei, a girl,and one is Fang Jun, a boy. Liu Wei's telephone number is 6523-4476. She has a blackjacket and she likes it. Fang Jun has no phone. His QQ number is 80123354. He hasa jacket, too. He likes yellow. He has a yellow ruler and a yellow pen. （1） Mark _______. A . is in Beijing B . is a student C . likes black D . has a blue pen （2） Mark has _______ friend14．如图甲所示，小明用弹簧测力计拉木块，使它沿水平木板匀速滑动，图乙是他两次拉动同一木块得到的距离随时间变化的图象．在木块匀速滑动的过程中，下列说法正确的是（　　）A．木块两次受到的拉力和摩擦力均相等B．木块第1次受到的拉力较大C．木块两次的动能一样多D．两次拉力拉木块的功率一样大