学术英语课后答案 unit2

Unit 2 Searching for Information

I. Teaching Objectives

In this unit, you will learn how to:

1.search for reliable and better source materials for your research

2.find your information by scanning and skimming

3.identify topic sentences for a general idea in the paragraph

4.guess word meaning through context clues and affixes

5.read fast by following the organization of the text

6.be a critical reader

7.take notes effectively

8.write a summary for what you have read

9.enhance language skills with the help of the reading and listening materials presented in this unit II. Teaching Procedures

1 Finding reliable and better sources

Task 1

Answers may vary.

Task 2

Answers may vary.

Task 3

Answers may vary.

2 Scanning and skimming

Task 1

1 Artificial intelligence.

2 The article may argue for/against the idea that artificial intelligence will replace human jobs in

the future.

3 The story tells that computerization threatens to replace many white-collar jobs.

4 The author is optimistic and may not agree that machines will replace human jobs.

5 The specter of automation unemploying us all may have finally arrived.

6 But the mass job shrinkage that these observers all expected did not come.

7 Yet Americans as a whole were not automated out of work. (Para.8, L1)

Yet, through all that, more new jobs appeared. (Para.11, L2)

8 Man will not lose jobs because there will always be demands of a new economy.

9 The neighbor would prefer to order the shoes from machine-handling factories.

10 Saving will lead to spending which in turn will create newer, perhaps better jobs tomorrow.

3 Identifying topic sentences for information

Task 1

1 Pieced together, the topic sentences form a short, coherent paragraph or essay.

2 a) Paragraph 2

b) Paragraph 11

Task 2

1 Game theory is the science of strategy.（Para.1）

2 Games are fundamentally different from decisions made in a neutral environment.（Para.3）

3 The essence of a game is the interdependence of player strategies.（Para.4）

4 A general principle for a player in a sequential-move game is to look ahead and reason back.

（Para.5）

5 In contrast to the linear chain of reasoning for sequential games, a game with simultaneous

moves involves a logical circle.（Para.7）

6 Another way to make threats credible is to employ the adventuresome strategy of

brinkmanship—deliberately creating a risk that if other players fail to act as one would like

them to, the outcome will be bad for everyone.（Para.17）

Task 3

1 Paragraph 1

2 Paragraph 5 to 10

3 Paragraph 12 to 19

4 Guessing word meaning

Task 1

2 immutable (Para.4, L2): 不变的

Context clues: who realized that space is not an immutable stage on which events play out

3 trampoline (Para.4, L4): 蹦床，弹床

Context clues: responding much as a trampoline does to a jumping child

4 malleable (Para.4, L5): 有弹性和延伸性的

Context clues: In fact, so malleable is space that, according to the math, the size of the universe

necessarily change over time.

5 stay put (Para.4, L7): 不动的

Context clues: The fabric of space must expand or contact—it can’t stay put.

6 flew in the face (Para.5, L4): 敢于违抗

Context clues: It flew in the face of the prevailing wisdom.

7 stalemate (Para.6, L2): 僵局

Context clues: A static situation, like a stalemate in a tug of war

8 repulsive (Para.6, L5): 排斥的

Context clues: a counterbalancing force would need to provide a repulsive push

9 antigravity (Para.7, L2): 排斥力

Context clues: antigravity—a gravitational force that pushes instead of pulls

10 exodus (Para.8, L3): 大批离开

Context clues: And the best explanation for this cosmic exodus came directly.

11 supernovae (Para.11, L2): 由于爆炸而突然变亮的星

Context clues: distant supernovae—exploding stars so brilliant they can be seen clear across

cosmos

12 garner (Para.13, L5): 获得、得到

Context clues: would have garnered him another Nobel Prize

13 perplexing (Para.14, L5): 令人不解的

Context clues: Perhaps most perplexing of all is a question of quantitative detail.

Task 2

2 unprecedented (Para.1, L1): un-precedented 史无前例的

3 self-replicating (Para.1, L6): self-replicating 自我复制的

4 diameter (Para.3, L2): dia-meter 直径

5 assembler (Para.10, L1): assembl-er 装配器

6 contaminant (Para.13, L3): con-taminant 污染物

7 non-renewable (Para.13, L6): non-renewable 不可再用的

8 foreseeable (Para.14, L2): foresee-able 可预见到的

9 exotic (Para.14, L2): exot-ic 非本地，奇异的

10 dissipate (Para.14, L6): dis-sipate 消失

Task 3

Derivatives Affixes or roots Meaning More Words

multidiscipline multi- many or several Multicolor multisteps 1

multiform multipurpose

nanotechnology nano- one of a thousand nanorobot nanomachine 2

million nanoscopic nanostructure

convergence verg incline to divergence verge 3

con- join concordconcourse conferate

construct struct build or make structure reconstruct 4

destruct obstruct

substructure

5 manufacture man-,

manu-

fact

interdisciplinary inter-

insulator insul- by hand make between or among a group of things or people protect sth. from manuscript manual manage manipulate factory facture interplay interweave interdependent interaction insulate insular insularity

6 7

8 semiconductor

9 semi- duct- microprocessors micro- unpleasant knowledge partly but not completely lead …… 此处隐藏：5098字，全部文档内容请下载后查看。喜欢就下载吧 ……