【正文】
mland can be increased by ____________. Scientists continue to ________ new types of ________ that can grow in poor ______ or even _____, and that are less likely to be _______ by pests and diseases. hunger one ten 40 increase irrigation develop plants soil sand attacked : China’s population China’s farmland 中國(guó)其他國(guó)家中國(guó)其他國(guó)家?Homework Today : 1 . Do the Exercises of Workbook P8 。 2 . Retell the Text in Your Own Words 。 3 . Preview Lesson 15 .