题目

Every year the White House celebrates the day after Easter Sunday in style. The President and First Lady throw a party for thousands of guests – mostly kids – on the White House South Lawn and nearby. There is plenty to do at this all-day affair--everything from storytelling and stage shows to art activities--and plenty to eat. But it is the egg rolling that attracts the most attention. Easter involves eggs, and the White House celebration has lots of them. Thousands of hard-boiled eggs are dyed different colors, and guests go home with special wooden eggs. Washington. D,C has been hosting 如图所示，在一个开口锥形瓶内注入适量水，然后将它放在水平桌面上．此时水对瓶底的压力为5N，现在将一个重为G1的木块放入瓶中，水对瓶底的压力变为6N，再将一个重为G2的木块放入瓶中，水对瓶底的压力变为7N．木块与瓶始终不接触，水也没有溢出，则（　　）                                                      A．G2＞G1＞1N      B．G1＞G2＞1N   C．G1＜G2＜1N      D．G2=G1=1N