教师解析

Nowadays global climate changes are the hot topics in the world. Someone think global climate is going slowly while others believe global climate is going to extreme. Some special phenomena such as El Nino and global warming now are attracting people’s attention. Before we read this passage, please think about the following questions.

Compared with ancient times, how does the climate change? 

What are the causes of global climate changes?

What are the effects of such climate changes?  

Now look at the first passage. Read it through quickly and mark out words you are not familiar.