必修一 Unit 5 Into the Wild- 外研版（2019）高中英语挖掘文本深度学习（解透教材词汇、语法、句型）

挖掘文本 深度学习 2019外研版高中英语 基于词、法、句 挖掘文本深度学习 必修一 Deep Learning Unit 5 In to the wild Understanding Ideas： The Monarch’s Journey 第一遍：词汇短语过关斩将 The Monarch’s Journey Many animals move from one place to another at certain times of the year. This a___1___(一年一度的) movement is called m___2___(迁徙). They migrate to find food, s___3___(寻找) a partner, or in search of warmer weather. One of the most wonderful migrations in nature is that of the North American m_____4_____(黑脉金斑蝶). Every autumn, millions of these beautiful insects with fine black and orange wings begin a long and difficult journey. Somehow they m___5___(设法做到) to travel around 4,000 kilometres south and find their way to California or Mexico. However, until recently no one knew how they did this. A team of scientists led by P___6___(教授) Eli Shlizerman at the University of Washington has now found the answer. They have found out that the monarch is able to tell the time of day. It uses its eyes to m___7___(测量) the p___8___(位置) of the sun. These two pieces of information - the time of day and the point where the sun is in the sky - allow the butterfly to d___9___(测定，判定) the way to go. E___10___ (最终), it manages to reach the places where it will spend the winter. The s___11___(解决，揭示) to the m___12___(奥秘) of the monarch's a___13___(惊人的) ability comes at a time when it is in serious trouble. Its population has c___14___(暴跌，减少) by as much as 90 p___15___(%, 百分之) in the last few years. Sadly, human activity is the main reason why the number of monarch butterflies is falling. In many of the places where the butterfly can be found, people are d___16___(破坏) the natural environment. They cut down trees and use c___17___(化学制剂) that kill the plants that monarch c___18___ (幼虫，毛虫) eat. The research on the monarch's behaviour has however led to a greater awareness of this c___19___(生物). People have been working together to record its migration and make sure that there are enough plants for it to feed on. If this w___20___(起作用),