The Yellow Mountain is one of the most famous m____  in China. Every year l____  of Chinese people and foreigners visit it. It is not f____  from here. You can s____ about two hours getting there by bus. You can also go there by train o____  by plane. When you are c____ the mountains, you can e____  the sea of clouds, wonderful trees and rocks (岩石) a____ you. In the e____ morning when the sun rises (升起)，the sun looks b____ . It is really a good place to go.

如图所示为t=0时刻一列沿x方向传播的简谐横波图形，t=1s时波的图形仍如图所示，则波速大小为____．若波的周期为T，则图中AB两质点在从图示位置起的一个周期内，运动方向相同的时间为____ T．

2014年7月7日，全民族抗战爆发77周年纪念活动在中国人民抗日战争纪念馆举行。“铭记历史警示，捍卫和平正义”。在新的历史条件下，全党全国各族人民要大力弘扬伟大抗战精神。中华民族精神的核心是（   ）

康有为变法思想的特点是（   ）