Every year there is a Spring Festival in China. Usually it is in January or February. It is the most important festival in China. So before it comes, everyone has to prepare things. They buy pork, beef, chicken, fruits and many other things. And they often make a special kind of food—“dumplings”. It means “come together”. On the day before the festival, parents buy new clothes for their children. Children also buy presents for their parents. On the Spring Festival Eve（除夕）, all the family members come back to their hometown. This is a happy moment. Some sing and dance，some play cards and others get the dinner ready. When they are having dinner, they give each other the best wishes for the coming year. They all have a good time.

下图为亚洲某国年降水量分布图。针对该国面临的突出生态环境问题，应采取的主要防治措施是（    ）

判断对错.

0.3333是一个循环小数．

反应：2A(g)＋B(g)2C(g)，当平衡向正方向移动时，下列说法一定正确的是