河北省邢台市第七中学高中英语 Lesson 53 Hot snake阅读教材

Lesson 53 Hot snake 触电的蛇Read the passage and then answer the question.阅读短文，然后回答以下问题。What caused the fire?At last firemen 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 firemen 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 firemen 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.New words and expressions 生词和短语hot adj.带电的，充电的 wire n.电线fireman n. 消防队员 volt n.伏特(电压单位)cause v.引起；n原因 powerline n. 电力线examine v.检查 solve v.解决accidentally adv.意外地，偶然地 mystery n.谜snatch v. 抓住 remains n.尸体，残骸spark n.电火花Notes on the text 课文注释1 at last，最后，终于。2 they have been trying to find out how the fire began，他们一直试图找出起火的原因。句中短语动词 find out 的宾语是一个从句 how the fire began。3 broken glass，碎玻璃。4 cigarette ends，烟头。5 in this way，就这样。参考译文消防队员们终于扑灭了加利福尼亚的一场森林大火。从那时起，他们一直试图找出起火的原因。森林火灾时常由破碎的玻璃或人们随手扔掉的香烟头引起。昨天，消防队员仔细查看了地面，但未能发现碎玻璃。他们还十分肯定火灾也不是由烟头引起的。然而今天上午，一个消防队员偶然发现了起火的原因。他发现了缠绕在16，000伏高压线上的一条死蛇。就这样，他解开了起火之谜。解释很简单，却异乎寻常。一只鸟把蛇从地上抓起来，然后把它扔到了电线上。于是蛇就缠住了几根电线。当它这样做时，把火花送到了地面，这些火花立刻引起了一场大火。Multiple choice questions 多项选择题Comprehension理解1 Firemen examined the ground carefully because they _.awere looking for cigarette endsb were looking for broken glasscwanted to find out what had caused the fired were looking for a snake2 The fire had been caused by _.a a bird which flew on to the wiresba snake which climbed on to the wiresca bird which was eating a snakeda snake which had been dropped on to the wires by a birdStructure句型3 The firemen have been examining the ground _yesterday.asince bfor cago dby4 Broken glass often _fires.ais causing b has caused ccauses dis caused by5 They were quite sure it wasnt a cigarette end. They were _.aalmost certain bfairly certainccompletely certain d nearly certain6 He was able to solve the mystery. He _.acould if he wanted to bcould but he didnt want tocsucceeded in solving it ddidnt succeed in solving it7 The bird had snatched the snake from the ground. The snake been _the ground.aat bfrom cover d onVocabulary词汇8 Firemen have put out the fire. They have _.acontrolled it b checked itc extinguished it d turned it off9 Firemen discovered the cause _.atoday morning btoday in the morningc in the morning today dthis morning10 They discovered the cause of the fire accidentally. They discovered it _.aby chance bchancily cfortunately dluckily11 In this way he was able to solve