自然实验法
参考答案：
就是在自然的情况下即教育情境下创设控制某些条件．以引起某种心理活动而进行研究的方法。
Read and choose. (读句子，选择相应的图片)
1. Look at the rainbow in the sky (天空). [ ]
2. 一Do you like squirrels?
一Yes, I do. [ ]
3. We go to our school by taxi.[ ]
4. 一 Susan, can I have strawberries?
— Sorry?We don't have strawberries. [ ]
We all know that hard working and plain living are fine __________ of our Chinese people.[ ]
A. qualities
B. manners
C. deeds
D. acts
