Topic 1 Pollution has caused too many problems.
Section D
一、学习目标
1、掌握新单词coal, create, blood, planet及短语high bood pressure.
2、引导学生通过阅读了解不同种类的污染，获取具体信息，进一步提高读的能力。
3、引导学生在读和说的基础上进行写作。
二、自主预习
Task 1：用正确时态填空：
1、I __________(go) there two years ago.
2、There __________ (be) lots of flowe rs and grass.
3、What __________(happen) here?
4、I __________(be) like this since last week.
5、The flowers and grass __________(go)!
