onomic order in the world.

　　c.The newly invented machine is economical of time and energy.

　　2.consequence consequent consequently

　　a.The farmers suffered a drought and there was a consequent shortage of food in the market.

　　b.If you behave so foolishly， you must be ready to take the consequence.

　　c.She was a bright and eager student and， consequently， did well in school.

　　3.contribute contribution contributor

　　a.His involvement contributed effectively to the solution of the dispute.

　　b.All contributors to the church will have a meeting today.

　　c.The young policeman made a remarkable contribution to public safety.

　　4.overpopulate population populate

　　a.If we didn't carry out family planning， our country would be much more overpopulated.

　　b. The centre of the city is a densely populated area.

　　c. The country is adopting radical measures to control the growth of its population.

　　ⅱ.Fill in the following blanks with the words listed below in their proper forms.

　　local massive upset senseless recede threaten export recycle select pay off

　　1.Empty bottles are recycled in order for the glass to be used.

　　2.The news that he failed the final exam upset him emotionally.

　　3.Tea， grain and sugar are among the most important exports.

　　4.The doctors made massive efforts to save the dying patient.

　　5.Columbus' idea of going east by sailing west was thought to be senseless by the Spanish nobles.

　　6.The coast was receding / receded slowly as our ship sailed out to sea.

　　7.Many rare species of animals are being threatened with extinction.

　　8.It's almost certain that our plan will pay off； it is a wonderful idea.

　　9.“When in Rome， do as the Romans do” means that one should behave according to the local customs.

　　10.Why didn't you select a better topic for your conversation？

　　Text B　Life on the Tundra

　　Ⅰ.New words：

　　1.含有前缀的单词：

　　subsoil n. 下层土，底土

　　2.含有后缀的单词：

　　marshy a.沼泽般的，湿软的

　　→marsh n.沼泽

　　→表示地形的单词：maintain/sea /desert /plain /plateau

　　continous a. 连续不断的，不停歇的，表示动作或物体不间断地进行下去

　　eg： They chattered continuously for an hour. 他们不间断地聊了一个小时。

　　continual a. 连续的，频繁的，表示多次重复的动作（有可能有间断）

　　eg： Please stop your continual questions. 请不要再接二连三的提问题了。

　　permanently ad. 长久地，永久地

　　→permanent （a.） 反义词：temporary a. 暂时的

　　lifeless a. 1.无生命的，死的；2.没有生气的，单调的

　　disturbance n. 1.骚动，动乱；2.打扰，干扰

　　deep a. 深的

　　depth n. 1.深度2.深处[常pl.] 3.深奥，深刻

　　seemingly ad. 1.表面地 2.近乎真实地

　　shortage n. 不足，缺少

　　explorer n. 探索者，考察者

　　3.合成词：

　　daylight ： 1.日光 2.日间

　　pipeline ： 管道，管线

　　4.特殊记忆：

　　minor 比较小的；少数的 ←→ major 比较大的；多数的

　　1）这两个词本身就有比较意味，用比较级时不需要变形加er

　　2）在用比较级的句子中，不用比较连词than，而用介词to

　　bay海湾 / port 海港 / coast 海岸，海滨/ gulf 海湾

　　5.本单元课文中出现的单词：

　　1.horizon n. 1.地平线；2.（喻）眼界，见识

　　E.g.： the horizon 地平线

　　Travel broadens one's horizons. 旅游可以开阔人的眼界。

　　2.continuous & continual

　　E.g.： They chattered continuously for an hour. 他们足足聊了1个小时。

　　Please stop your continual questions. 请不要再接二连三地提问题了。

　　3.hunt vt. 1.追猎，猎取；2.追赶，搜索

　　vi.（for）1.打猎；2.猎食；3.搜寻

　　n.打猎

　　E.g.： go hunting 去打猎

　　He's been hunting for a lost book. 他一直在找那本丢失的书。

　　Phrases：

　　1.be known as 以…而闻名，通常名叫

　　E.g.： Mark Twain was known as a great novelist. 马克· 吐温作为一个伟大的小说家被人们熟知。

　　→be known for 因为…而出名

　　2.in search of 寻找…，寻求…

　　Eg： Scientists are in search of a cure for the disease. 科学家正在想治疗这种疾病的方法。

　　3.to …degree 达到…程度

　　to some degree 达到一定的程度

　　to what degree 达到什么程度

　　to a high/low degree 达到很高/低的程度

　　to such an degree 达到如此…的程度

　　to a certain degree 达到一定的程度

　　E.g. He is vain to a high degree. 他非常爱虚荣。

　　4.to some extent 在某种程度上

　　E.g.： To some extent you are correct . 从某种程度上说你是正确的。

　　I agree with you to a certain extent. 我在一定程度上同意你的意见。

　　5.prevent … from 防止，阻止

　　E.g.： Put on more clothes to prevent yourself from getting a cold. 多穿点衣服，以免感冒。

　　6.in turn 1.依次，轮流；2.反过来

　　by turns 轮流，交替

　　1）please speak in turn. 请依次发言。

　　2）Theory is based on practice and in turn serves practice. 理论以实践为基础，反过来又为实践服务。

　　3）The couple wash dishes by turns. 夫妻俩轮流洗碗

　　7.result in = bring about 导致，产生

　　E.g.： Our efforts resulted in success. 我们的努力终于导致了成功

　　→result from 因为…。发生，产生

　　E.g.： His injury resulted from a fall. 他因摔倒而受伤。

　　Ⅱ.Text B

　　Life on the Tundra

　　冻土带上的生活情景

　　Tundra is the name given to the low， marshy

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