教学目标:
By the end of this section, students will be able to
1.Learn about some knowledge of great scientists and appreciate the stories about their scientific discoveries.
2. Summarize some important vocabularies and sentence structures and learn to apply them in new contexts.
3. Write a short passage about a famous Chinese scientist and doctor,Zhong Nanshan.
教学重点：
1. Have a review of the two passages in this unit and understand what they want to convey to us.
2. How to apply the vocabularies and sentence structures to new contexts.
教学难点：
Distinguish and apply some important words and expressions in new contexts.
