第一步 速读——了解文章主题和段落大意
速读P39教材课文，从下面四个选项中选出文章的主题
The main idea of the passage is ．
A．the dangers of rockets
B．the development of rockets
C．the advantages of rockets
D．the invention of rockets
[答案] B
第二步 细读——把控文章关键信息
细读P39教材课文，选择最佳答案
1．When were rockets probably invented?
A．About 2，000 years ago.
B．In 1232.
C．Between the 13th and 15th centuries.
D．During the Song Dynasty.
