外研版（2019）必修2《Unit 4 Stage and screen Period 3》2021年同步练习卷

I.单元要点回扣练A.重点短语集锦

• 1．

  追溯到…
  组卷：18引用：12难度：0.7

  解析

• 2．以…开始

  ．
  组卷：21引用：6难度：0.7

  解析

• 3．

  解释清楚，传达
  组卷：0引用：6难度：0.7

  解析

• 4．把…转变成

  ．
  组卷：4引用：4难度：0.7

  解析

• 5．

  表演（节目）
  组卷：0引用：4难度：0.7

  解析

• 6．

  常常；时常
  组卷：0引用：1难度：0.9

  解析

• 7．导致

  ．
  组卷：60引用：33难度：0.5

  解析

IV.短文语法填空

• 20．A boy found a cocoon（茧） of a butterfly and watched the butterfly for several hours as it struggled to force its body （1）

  that little hole． Suddenly it stopped（2）

  （make） any progress because it（3）

  （stick）． So he cut off the remaining part of the cocoon．（4）

  it had a swollen body and small wings， the butterfly then came out （5）

  （easy）． The boy waited for the wings to become（6）

  （large） to support it． But it didn't happen． In fact， it must have（7）

  hard struggle to get its （8）

  （free） from the cocoon． The boy didn't understand that the restricting cocoon and the struggle（9）

  （need） by the butterfly were a way to prepare itself for flying once it was out of the cocoon．
      Our struggles in life develop our strength， without（10）

  we never get stronger， so it's important for us to handle challenges on our own， and not to rely on others for help．
  组卷：22引用：2难度：0.5

  解析

V. 概要写作

• 21．阅读下面短文，根据其内容写一篇60词左右的内容概要。
      Driving on Ice
      In many northern states，the winters are so cold that the lakes freeze right over.In Minnesotas，Michigan，and Maine，the ice in these lakes can freeze two to three feet deep.
      When the ice is that thick，it becomes possible to actually drive a car or truck across the ice.While driving on ice sounds like something that people would do just for fun，a lot of people drive across frozen lakes for very practical reasons.
      For example，there are people who live yearround on islands within these northern lakes.In the middle of winter the only practical way of traveling to the mainland is by driving across the frozen lakes.
      Actually，when the lake is frozen two to three feet deep，this is a perfect opportunity for people living on islands to transport large objects onto or off the islands.Say，for instance，you owned a cabin on a small island in the middle of a lake in Michigan.Suppose you decided that you wanted to build an extra room onto the cabin.
      Transporting all the building materials onto the island using a boat would take a lot of work and expense.But if you waited until winter，you could easily drive all the building materials across the lake.
      How can you tell if a lake is frozen solid enough to drive on？The surest way to know is to wait until several other cars and trucks have safely driven across the ice.
      It's possible that one section of the lake has currents that prevent the lake from freezing solid.Or there might be a river or stream that brings slightly warmer water into one part of the lake.So even though most of the lake is frozen solid，one section of the lake can have thin ice.
      Usually it takes at least two to three weeks of very cold weather before deep ice is formed on a lake.Here in the northern United States，deep ice doesn't form until midJanuary，at the earliest.Do the tires of cars slip when they drive across ice？Yes，sometimes they do.But almost every car and truck that drives on ice has snow tires，which creates extra friction between the tires and the ice.Some people also choose to put chains on their tires，which gives the tires an even stronger grip against the ice.
  组卷：8引用：1难度：0.3

  解析