题目

对于反应3A==2B，根据下图，说法不正确的是（   ）A．该反应为吸热反应B．该反应一定有能量转化成了化学能C．反应物比生成物稳定D．因为生成物的总能量高于反应物的总能量，所以该反应不需要加热  答案：A解析:  Choose the best topic from A to F according to the meaning of the passage． 1．Years ago，if a person had some problems or wanted to write something down，he／she might keep a diary．But now，more and more people go onto the Internet，and write something in a blog（博客）． 2．In many ways, a diary and a blog are almost the same．Both diaries and blogs can tell what happened to the writer． 3．A blog is a public way of writing．Anyone can read what you write in it．So you'd better be careful of your writing．However，a diary is just opposite．It is personal，your secrets can be kept well． 4．On the Internet, I sometimes read some people's blogs．They often write about studying，working，travelling，spots and so on．From their blogs，I can find some of their thoughts，feelings，etc． 5．If a person isn't afraid to let others know something about himself／herself．A blog is a very good way to record（记录）everyday life． A．Differences between a blog and a diary． B．A diary and a blog have the same points． C．Some people like writing in a blog now． D．A blog is public． E．People may write something different in a blog． F．A good way to record everyday life．