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2019-2020年高中英语基础阅读材料1Lesson 53 Hot snake 触电的蛇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 ht adj. 带电的，充电的 wire wa(r) n. 电线 volt vult n.伏特(电压单位) cause k:z v.引起；n原因 powerline pau lain 电力线 examine zmn v.检查 solve slv v.解决 accidentally ksdentl adv. 意外地，偶然地 mystery mstri n.谜 snatch snt v. 抓住 remains rmenz n.尸体，残骸 spark sp:k n.电火花回答下列问题.1 Have firemen put out a big forest fire in California or not? Have they been trying to discover its cause?2 Was there any evidence that it was started by broken glass or by a cigarette end or not? 3 Who has just solved the mystery? 4 What did he notice? Had it been dropped by a bird on to the electric wires or not? 5 Where did the snake wind itself? What had it sent to the ground? Did this cause the fire or not?Exercises 练习A.划出课文中表示一般过去时，现在完成时和现在完成进行时的动词来。B.用正确的时态填空，完成练习后再对照课文核对你的答案：At last firemen_(put) out a big forest fire in California. Since then, they_(try)to find out how the fire_(begin).Yesterday the firemen_(examine)the ground carefully, but_(not be)able to find any broken glass. They_(be)also quite sure that a cigarette end_(not start) the fire. C.用括号中动词的正确形式填空，必要时加上引号和逗号，并分段。Jack_(look) at his watch for the twentieth time.Suddenly Jill_ (arrive).I_(wait)for over an hour he said angrily. You never e on time. Oh, is that so? Jill_(answer)._(Be) you here at 2.30?Jack_(go) red. Well he_(say) I_(get)here five minutes late myself, but you_(not be)here. I_(e)here at exactly 2.30 Jill_(say)and I _(wait)for five minutes, but you_(not e). What you_(do)since then? Jack _(ask).I just_(be)to the hairdressers Jill_(answer)brightlyMultiple choice questions 多项选择题1 Firemen examined the ground carefully because they _.awere looking for cigarette ends b were looking for broken glass cwanted to find out what had caused the fire d were looking for a snake 2 The fire had been caused by _.a a bird which flew on to the wires ba snake which climbed on to the wires ca bird which was eating a snake da snake which had been dropped on to the wires by a bird 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 by 5 They were quite sure it wasnt a cigarette end. They were _. aalmost certain bfairly certain cpletely certain d nearly certain 6 He was able to solve the mystery. He _. acould if he wanted to bcould but he didnt want to csucceeded in solving it d didnt succeed in solving it 7 The bird had snatched the snake from the ground. The snake been _the ground. aat bfrom cover d on8 Firemen have put out the fire. They have _.acontrolled it b checked it c extinguished it d turned it off9 Firemen discovered the cause _.atoday morning btoday in the morning c in the morning today dthis morning 10 They discovered the cause of the fire accidentally. They discovered it _.aby chance bchancily cfortunately dluckily 11 In this way he was able to solve the mystery. _he did it.aThats so bLike this cThats how d So 12 The bird had snatched up the snake from the ground. It had _it.ataken bpulled cseized dcarried
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