27．in_a_nutshell 简言之；概括地讲

　　28．look_through 浏览

　　二、单元核心考点初热身--提供语境，单元考点自测回顾

　　(一)分类识记单词--用时少·功效高

识记单词写对 Ⅰ.知其意(英译汉)

1.sandstorm n．　　　沙尘暴

2.campaign n. 战役；活动

3.desertification n. (土地的)沙漠化

4.citizen n. 公民；市民

5.dust n．　　　　沙尘；灰尘

6.mask n. 面罩

7.melt vi. 融化

8.coastal adj. 沿海的 Ⅱ.写其形(汉译英)

1.mass adj.　　　大量的；大规模的

2.forecast vt. 预报；预告

3.chemical n. 化学药品

4.garbage n. 废料；垃圾

5.scary adj. 恐怖的；吓人的 核心单词练通 1.Learning is a process (过程) in which we adapt ourselves to our surroundings.

2.These materials can be recycled (重新利用) into other packaging products.

3.I think the answer is right but I'm not absolutely (绝对地) sure about it.

4.The two parties held the talk in a friendly atmosphere (气氛) and reached an agreement

5.The protection of the environment (环境) is one of the basic state policies of the Chinese government. 拓展单词用活 [记全记牢]

1.frightening adj.吓人的；可怕的→frightened adj.害怕的→frighten vt.使害怕；使惊吓→fright n．害怕；恐惧

2.strength n．力量；力气；优势；长处→strengthen vt.加强；增强；巩固→strong adj.强壮的；坚强的→strongly adv.坚强地

3.concerned adj. 关心的；担心的；有关的→concern vt.(使)担忧；涉及；关系到 n．担心；关注；(利害)关系→concerning prep.关于；就......而言

4.evidence n．根据；证明→evident adj.明显的；显然的

5.major adj.主要的；多数的 vi.主修→majority n．大多数

6.urgent adj.紧急的→urge vt.催促；极力主张→urgency n．紧急；紧急情况

7.pollute vt.污染→pollution n．污染

9.protection n．保护→protect v．保护 [用准用活]

1.David has a strong body. He has the strength to do this hard work. We had better strengthen the relationship with him. (strength)

2.One of the major problems is that a majority of the graduates who major in English find it difficult to find a good job. (major)

3.Lacking proper protection against cold, we try to make a fire to protect us from the cold night. (protect)

4.The teacher urged that the students (should) be taught how to take urgent action in urgency. (urgent)

5.The frightening scene frightened the boy. He felt frightened but he tried to hide his fright. (fright)

6.The public have shown great concern about the food safety, because it concerns the people's health. It is hoped that the authorities concerned can really do something about the issue concerning the public health. (concern)