新概念英语第二册Lesson53同步练习

新概念英语二 Lesson 53 Hot snake 教学目标： 1. 掌握cause, examine, solve, snatch, put out, since then, snatch up等重点词汇及短语。 2. 掌握该课重点句型及结构： （1）宾语从句 （2）定语从句 3. 能够独立完成课后练习。 4. 熟悉背诵文章，并能够学以致用。 课文回顾: At last firemen have ________________(扑灭)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 c_______________ ends which people _______________ throw away. Yesterday the firemen e____________ 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 fireman a________________ discovered the cause. He noticed the r_____________ of a snake which was wound round the electric wires of a 16,000-volt power line. ______________(用这种方法), he was able to solve the m___________. The e______________ was simple but very unusual. A bird had s____________ 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 s____________ down to the ground and these immediately started a fire. Part I There are four choices marked [A] [B] [C] and [D] for each sentence below. Choose the one that best completes the sentence. 从[A]、[B]、[C]、[D]四个选项中，选出可以填入空白处的最佳选项。 1. I _________ your last point—could you say it again? A. didn’t quite catch B. don’t quite catch C. hadn’t quite caught D. can quite catch 2. ---How is the weather in your country this summer? ---It ________ as much as it does now for a long time. A. hasn’t rained B. doesn’t rain C. wasn’t raining D. didn’t rain 3. I feel sure I _________ her before somewhere. A. was to meet B. have met C. had met D. would meet 4. I had hoped to see her off at the station, but I ________ too busy. A. was B. had been C. would be D. would have been 5. ---You look very tired. ________ at all last night? ---No, not really. I’m tired out now. A. Do you sleep B. Were you sleeping C. Did you sleep