2 . 使用恰当的过渡衔接词连句成篇
1. 我是李华，谨代表我校写信对你们的努力和帮助表示真诚的感谢。否则我们的城市可能会遭受更大的破坏。
2. 令人震惊的是，重庆受高温和干旱袭击，导致烈火发生。
3. 你们来了，及时提供了援助。
4. 尽管许多志愿者极其疲惫，依然专心于运送物资。
5. 正是你们不懈的努力和决心结束了这次自然灾害。（强调句）
6. 我们被你们深深感动，我们决定竭尽全力使我们的城市更美好。
Dear volunteers,
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Yours,

Li Hua

3 . 根据提示，运用本单元的词汇、短语及句式或使用词汇的正确形式完成下面的语篇。
Dear Sir/Madam,

    1     (我写信感谢你的及时救援), without which my life couldn’t return to normal.

A few days ago,     2     (一场极其可怕的地震袭击了我的家乡), leaving many houses in ruins.     3     (shock) to find everything buried under the fallen houses, I burst into tears.     4     (世界似乎到了尽头). Thankfully, although you were strangers, you     5     (不遗余力) provide enough food and water for us to survive on. With strong support from the government and your generous aid, a new town was built upon the earthquake     6     (ruin).

I can’t express my gratitude too much.

Yours sincerely,

Li Hua

4 . 语法填空

The Alaska earthquake of March 27, 1964 was one of the biggest     1     (disaster) in the earth science. As it was a holiday, many people were at home. Everything was going on as usual     2     people’s houses     3     (shake). Buildings     4     (crack) and water pipes burst. It lasted more than four minutes and many people were buried under the     5     (ruin), who waited for rescue workers to come     6     their rescue. The earthquake left people    7    shock and destroyed many towns and a great number of people suffered     8     the disaster. However, they all did everything in their power     9     (rebuild) the city.

5 . 根据汉语提示完成短文。

Nicholas, intrigued by adventure stories,     1     (出发去滑雪) with his father. They had a wonderful day. When they were to leave, Nicholas decided to go down unusual trails himself. Unfortunately, a fierce snowstorm swept the area and Nicholas was lost. He remembered the story he ever read, in which a man was abandoned in a wild area and had to help himself out. “I would not shrink from danger. It’s time to     2     (我学到的技巧付诸实践了),” he whispered. He determined to     3     (逃命). Although in a subdued mood, he would not retreat.     4     (再三考虑之后), he     5     (全身心地建一个雪洞) to keep himself warm. The next day, he was found by his father, safe and sound.

7 . 使用恰当的过渡衔接词连句成篇
1.Rachel Carson在1962年出版了她的书《寂静的春天》。
2.她的目的是提醒人们注意人类活动对自然生态系统的破坏性影响。
3.她的书产生了如此直接和深远的影响，以至于DDT被禁止使用。(such...that...)
4.她的书很快成为一些农药行业批评者的目标，他们试图损害Carson的声誉。(定语从句)
5.Carson决心坚持自己的研究，捍卫自己的主张。
6.即使到今天，她的书仍然值得重读。
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8 . 应用文写作运用： 倡议书——保护野生动物
要求：
1. 利用本单元所学知识完成句子；
2. 使用恰当的过渡衔接词连句成篇。
①人类活动影响了动物的栖息地，大大降低了野生动物的数量。
②很多野生动物很难适应现在的环境。（it作形式宾语）
③政府已经关注这种状况，并采取了一系列措施来应对这个问题。
④与此同时，一系列的法律已经付诸实施。
⑤我相信我们会成功地消除这件事对我们的困扰。
⑥人类肯定可以与动物和平共处。
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9 . 短文填空

Suddenly, the aftershock struck, which made the rescue work more difficult. “A nurse in the ward was covered with rubble,” a doctor screamed with horror then. We volunteers rushed to     1     (帮助医生抢救被掩埋在废墟里的护士). Although we were faced with falling rubble from time to time, we focused our efforts on removing the bricks and the rubble that trapped her.     2     (通过我们的共同努力), the nurse was rescued. It was a miracle that she survived the earthquake.     3     (我们的努力和付出是值得的).

10 . 根据汉语提示补全短文

One day, while Tom was behind the wheel, some yellow vests     1     (分散了他的注意力). It is some volunteers dedicated to environmental protection work who are cleaning up the garbage on the roadside.     2     (相比) those who spit in public and litter about, these volunteers       3     (激励他做一些促进环境保护的事情). On reflection he decided to join the volunteers since the beautiful environment       4     (依靠每个人的贡献).