This part consists of 15 sentences; in each sentence one word or phrase is underlined. Below each sentence, there are 4 choices respectively marked by letters A, B, C and D. Choose the word or phrase that can replace the underlined part without causing any grammatical error or changing the basic meaning of the sentence. There is only ONE right answer. Blacken the corresponding letter as required on your Machine-scoring ANSWER SHEET.

　　21. Shellfish give the deceptive appearance of enjoying a peaceful existence, although in fact life is a constant struggle for them.

　　A. misleading B. calm

　　C. understandable D. initial

　　22. The most striking technological success in the 20th century is probably the computer revolution.

　　A. profitable B. productive

　　C. prominent D. prompt

　　23. Scientific evidence from different disciplines demonstrates that in most humans the left hemisphere of the brain controls language.

　　A. groups of followers B. years

　　C. countries D. fields of study

　　24. Public relations practice is the deliberate, planned and sustained effort to establish and maintain mutual understanding between an organization and its public.

　　A. complete B. related

　　C. intentional D. active

　　25. The use of the new technology will have a profound effect on schools.

　　A. negative B. positive

　　C. strong D. useful

　　26. If we look at the Chinese and British concepts of hospitality, we find one major similarity but a number of important differences.

　　A. hostility B. friendliness

　　C. manner D. culture

　　27. In just three years, the Net has gone from a playground for the local people to a vast communications and trading center where millions swap information or do deals around the world.

　　A. business B. shopping

　　C. chatting D. meeting

　　28. Most species of this plant thrive in ordinary well-drained garden soil and they are best planted 8 cm deep and 5 cm apart.

　　A. develop well B. grow taller

　　C. mature D. bear fruit

　　29. Motivation is the driving force within individuals that impels them to action.

　　A. impedes B. interferes

　　C. holds D. pushes

　　30. The ultimate cause of the Civil War was the bombardment of Fort Sumter.

　　A. only B. final

　　C. true D. special

　　31. No hero of ancient or modern days can surpass the Indians with their lofty contempt of death and the fortitude with which they sustain its cruelest affliction.

　　A. regard B. courage

　　C. loss D. trick

　　32. The service economy doesn't suggest that we convert our factories into laundries to survive.

　　A. imply B. persuade

　　C. hurl D. transform

　　33. It was rather strange how the habits of his youth clung to him still. He was 72.

　　A. stuck to B. turned

　　C. led to D. gave way to

　　34. He has a touch of eccentricity in his composition.

　　A. essay B. writing

　　C. character D. manner

　　35. Jim was a stout old gentleman, with a weather-beaten countenance.