While-Reading
Skim the passage to get its main idea.Finish Exercises I. 1-3.
1. Don’t read the text word by word.2. To get the main idea quickly,  please read the first or the last  sentence of each paragraph.
Reading Tips
Skimming
    The text mainly talks about an  _______________pioneer named  _______________who worked hard  to produce________________.
agricultural
Yuan Longping
super hybrid rice
While-Reading