Unit 5 Hot snake Lesson 9（课件）-2025-2026学年新概念英语青少版（2008） 5A

Unit 5 Hot Snake Lesson 9 A Mystery in California ❓ What usually causes forest fires? Searching for Clues ✖️ No broken glass ✖️ Not a cigarette end 💬 Why were firefighters confused? At last firefighters have put out a big forest fire in California. Since then, they have been trying to find out how the fire began. Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away. Yesterday the firefighters examined the ground carefully, but were not able to find any broken glass. They were also quite sure that a cigarette end did not start the fire. This morning, however, a firefighter accidentally discovered the cause. He noticed the remains of a snake which was wound round the electric wires of a 16,000-volt power line. In this way, he was able to solve the mystery. The explanation was simple but very unusual. A bird had snatched up the snake from the ground and then dropped it on to the wires. The snake then wound itself round the wires. When it did so, it sent sparks down to the ground and these immediately started a fire. Retell the story 1.firefighters➩put out ➩fire in California 2.since then ➩find out fire➩ began 3.forest fires ➩glass ➩cigarette ends 4.examined ➩couldn't find ➩broken glass 5.quite sure➩ cigarette end➩ not start Retell the story 6.This morning ➩accidentally ➩the cause 7.remains ➩snake ➩wires power line 8.explanation➩ simple ➩unusual 9.bird ➩snatched up➩ dropped on to 10.When ➩wound➩ sent sparks started Summary Challenge Now that firefighters have put out... There was no evidence... However, a firefighter... Fire Safety at Home What Caused the Fire? Role play News Reporter Live! Student A—— Journalist Student B—— Fireman Ep:We've discovered that... Thank you! $$