The Winter Olympics are also called The White Olympics. At this time, many colorful stamps are published to mark the great Games. The first stamps marking the opening came out on January 25th,1932 in the United States for the 3rd White Olympics. From then on, publishing stamps during the White Olympics became a rule. During the 4th Winter Olympics, a group of stamps were published in Germany in November 1936. The five rings of Olympics were drawn on the front of sportswear. It was the first time that the rings appeared on the stamps of the White Olympics.

    In the 1950's, stamps of this kind became more colorful. When the White Olympics came, the host countries as well as the non-host(非主办方)countries published stamps to mark those Games. China also published four stamps in February 1980, when the Chinese sportsmen began to take part in the White Olympics.

    Japan is the only Asian country that has ever held the White Olympics. Altogether 14,500 million stamps were sold to raise money for this sports meeting.

    Different kinds of sports were drawn on these small stamps. People can enjoy the beauty of the wonderful movements of some sportsmen.

下列化学用语正确的是（  ）

古诗文名句填空。
①今夜偏知春气暖，            。
②且壮士不死即已，死即举大名耳，                 ！
③古代诗歌中，有一类诗句全部以名词组合而成，展现了情景交融的美妙境界，如温庭筠《商山早行》中的“          ，人迹板桥霜”；马致远《天净沙·秋思》中的“枯藤老树昏鸦，         。”
④在默写古诗词名句时，有时同学不能正确区别“雁”与“燕”而出现误写。其实，这两种形象在古诗词中表达的情感是不同的，“雁”一般与思乡有关，如         ，             。而“燕”一般则与报春有关，如               ，               。

核反应堆中的燃料是____．用石墨、重水等作为____，使裂变时产生的中子速度减小，易于被铀核吸收．用镉棒来____，以控制反应的____，再用水等流体在反应堆内外循环流动，传输反应中产生的热量．

下列选项能反映出中学生自尊的选项是（    ）