Unit 3 Fit for life 同步练习-2023-2024学年-2023-2024学年高中英语牛津译林版（2020）选择性必修第二册

高二年级 英语 学科测试案 时间：1月 号 编号：33 B5U3 Fit for life 学习目标： 1、题型训练 2、能力提升 学习流程及内容： 1. Leading – in 2. Discussion 3. Assessment 4. Checking Step1导：（3分钟) 根据答题卡的数据，老师点评学案答题情况 Step 2议：(7分钟） Step 3展：（20分钟） Step 4 评：(7分钟 老师评价和补充） Step 5 测：（3分钟） 巩固讲解中出现的重点词汇短语（以个人二备为主） 一. 阅读理解 A When a leafy plant is under attack, it doesn’t sit quietly. Back in 1983, two scientists, Jack Schultz and Ian Baldwin, reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm. What the plants pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs for short. Scientists have found that all kinds of plants give out VOCs when being attacked . It’s a plant’s way of crying out. But is anyone listening? Apparently. Because we can watch the neighbors react. Some plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes designed to attract different insects who are natural enemies to the attackers. Once they arrive, the tables are turned. The attacker who was lunching now becomes lunch.   In study after study, it appears that these chemical conversations help the neighbors . The damage is usually more serious on the first plant, but the neighbors, relatively speaking, stay safer because they heard the alarm and knew what to do. Does this mean that plants talk to each other? Scientists don’t know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to “overhear” the cry. So information was exchanged, but it wasn’t a true, intentional back and forth. Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate(