Lesson 7: Virus Diseases of Crops (1) New professional English words and expressions (2) idiomatic expressions, important language points and the sentenc structure (3) translation properly Lesson 8: Insect behavior (1) New professional English words and expressions (2) idiomatic expressions, important language points and the sentenc structure (3) translation prop Lesson 9: The Pest Management Concept (1) New professional English words and expressions (2) idiomatic expressions, important language points and the sentenc structure (3) translation properly Lesson 10: ReviewLesson 7: Virus Diseases of Crops (1) New professional English words and expressions (2) idiomatic expressions, important language points and the sentence structure (3) translation properly Lesson 8: Insect Behavior (1) New professional English words and expressions (2) idiomatic expressions, important language points and the sentence structure (3) translation properly Lesson 9: The Pest Management Concept (1) New professional English words and expressions (2) idiomatic expressions, important language points and the sentence structure (3) translation properly Lesson 10: Review