I learn history in different ways. The history class in the United States is different from that in China. At Chinese middle school, my history textbook is thin. It has only about 100 pages. We listen to the teacher, take notes and do exercises after school. We do not have to know ...
完形填空. Different from popular thoughts, sometimes fluis not caused by bad weather.It is caused by viruses in the body. 1 , A/H1N1 flu has been spreading in the most parts in the world.Some studies have now shown that one of 2 ways of spreading the