题目

In the world, soccer of football is the most popular sport. This is because many countries have wonderful teams for the World Cup.  The World Cup is held every four years. To remember 2002 FIFA World Cup ,children from different countries and more than 60 children from Japanese schools came together and spent three weekends drawing a big picture called “Dream（梦幻） World  Cups” in Japan .The children drew animals, flowers and people playing soccer under a blue bright sky. They wished each football team good luck by drawing the flags（旗帜）of all the countries that will take p下列关于 0．2 mol/L 硝酸钾溶液的叙述中，正确的是A．1 L 该溶液中含硝酸钾 202 gB．100 mL 该溶液中含硝酸钾 0．02 molC．从 1 L 该溶液中取出 500 mL 后，剩余溶液的浓度为 0．1 mol/LD．1 L 水中溶解 0．2 mol 硝酸钾，即可配得 0．2 mol/L 硝酸钾溶液