综合学术英语教程练习答案

Unit Two

Task 1 Familiarizing Yourself with Classif ication

1. Skim the f ollowing passage f or the answ ers to the questions below .

1) Man-made or anthropogenic causes, and natural causes.

2) Pollution (burning fossil fuels, mining coal and oil, etc.), the production of CO 2 ( the increase of

population, the demolition of trees, etc.) 3) CO 2 is a greenhouse gas that traps heat in the Earth ’s atmosphere.

4) Classif i cation helps us to determine and understand the relationship of the parts of a subject which is studied by us. Classification is made on the basis of a clear definition.

5) In order to make a clear and logic classification, one needs to follow a principle of classification and go on with a system consistently. For example, the categories of classification should be mutually exclusive and no overlapping is allowed.

Reading 1

Causes for Global Warming

Task 2

Understanding Lectures through Classif ication

Listening 1

1. Listening to the lectur e and write down wha tever y ou believ e is impor tant, especially the classif ica tions of key terms .

Unconscious motivation, unconscious conflict, the id, the ego, the superego, etc.

2. Use y our notes . D ecide if the sta tements below ar e true (T) or false (F). Then justify y our answ ers , in the space pr ovided, b y giving evidence fr om the talk. 1) T 2) F 3) F 4) F 5) T 6) F 7) T 8) F

3. Listen again, paying a ttention to the f ollowing classif ica tions and then complete the tables below .

Idea One: The existence of an unconscious motivation

Idea Two: The notion of unconscious dynamics or conflict

4. Listen again and piece y our notes together into a shor t summar y . Then r etell the lectur e to y our par tner .

There are two interesting ideas in Freud ’s theory: first, the existence of unconscious motivation; second, the concept of unconscious conflict. Freud believes that unconscious motivation might play an important role in a lot of situations, such as marriage, forgetting a person ’s name, calling out the wrong name etc. In his view, there are three processes going on in the head, namely, id, ego and superego, which are in violent internal conflict. Id functions on “the Pleasure Principle ”, while ego works on “the Reality Principle ”and superego is the internalized rules of a society. Ego is in between id and superego.

Task 3 Reading Classif ication Articles

Reading 2 Renewable Energy Sources —A Brief Summary

1. W ork with a par tner or a gr oup of 3—4 students . Study the title and phr ases in bold of Reading 2 and discuss the f ollowing questions .

1) Renewable energy is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished). 2

) √ T he purpose of using renewable energy sources.

√ T he classification of renewable energy sources. √ T he examples of different types of renewable energy sources.