距离北京最近的海域是（　　）

宪法至上，法治才有权威和尊严。宪法是治国安邦的总章程，是国家的根本大法。这是因为（    ）

①宪法是国家所有法律的总和                                  ②宪法具有最高的法律效力

③宪法的制定和修改程序比其他法律更为严格      ④宪法规定国家生活中最根本的问题

如图，把线段AB平移，使得点A到达点C（4，2），点B到达点D，那么点D的坐标是（　　）

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Tang Hai is chatting with his e-pal David on QQ (T: Tang Hai   D: David)
D: Hi. How is it going these days?
T: Pretty good! We celebrated our Dragon Boat Festival(端午节) last week.
D: Dragon Boat Festival?1
T: To remember an ancient Chinese poet(诗人)。
D: How do you usually celebrate it? 
T:2 But this year, we did something more interesting.
D: What did you do?
T: Our school had a Dragon Boat race.
D:3 who won the race?
T: Our class.
D:4
T: Thanks a lot. I hope you can come to China sometime.
D:5 I'm interested in Chinese traditions. Tell me more about them next time.
T: Ok, I will. See you.
D: See you!