But this happens only in a steady school environment, where teachers are familiar faces from

year to year and, preferably, where the student population is not too large. If teachers were paid

salaries more in line with other professionals, perhaps a greater number would harbor a desire to

take care of a class through to their final exams. If counseling (咨询) services and teaching aides were recognized by those who pay as more than elective extras ... If ... If ...

28. What difficulty is discussed in Paragraph 2?

A. Correctly interpreting students' behavior. B. Structuring lessons outside the classroom.

C. Paying special attention to those often bullied. D. Students defending themselves against bullies.

29. What is the author's attitude to bullying policies?

A. Confused. B. Doubtful. C. Hopeful. D. Unconcerned.

30. Which word can replace "ward off" in Paragraph 4?

A. Catch. B. Prevent. C. Decrease. D. Record.

31. What does the author conclude in the last paragraph?

A. Bullying and teachers' rights are separate issues. B. Student population has little to do with bullying.

C. Teachers need support to reduce bullying. D. Few people want to be teachers for life.

In Australia and other developed countries, consumption（消耗）is viewed as important for economic growth. In recent years, however, concern has grown about the increasing number of people consuming limited resources at a shocking rate. The United States has only about 5 percent of the world's population, yet consumes about 35 percent of the world's energy.

Impressive packaging and storage such as refrigeration is a luxury (奢侈) that consumers in developed countries take for granted (认为理所当然). In many parts of the world where refrigeration is either unavailable or too expensive, fresh food is bought daily from open-air markets.

These markets make little influence on the environment. They do not use energy to store food and because they mostly operate during daylight hours, no electricity is used for lighting. Packaging is mostly unnecessary, and when needed, is often made from biodegradable (可生物 降解的) vegetable matter. These markets still exist in many parts of the developed world, but are an alternative (供选择的)form of shopping. Even in developing countries, shops are fast becoming the main places for consumers.

Commercial (商业的) packaging is becoming as much a part of consumption in developing countries as it is in developed countries. Plastic bags, drink cans, and hamburger containers are now thrown into rubbish piles along with banana leaves which are a more traditional form of packaging. In most cases, it all ends up at the local garbage disposal plant and is not recycled.

Many people are starting to notice the influence of consumerism on the environment. It is affecting not only the earth, but also our health. Some scientists think that the greenhouse effect has increased due to the production, use and disposal of many of the products we use.

32. What does the author think of packaging and refrigeration?

A. It's quite necessary. B. It's a costly process.

C. It's the progress of society. D. It's different from consumerism.

33. What can be known about the open-air markets in developing countries?

A. They are not changing. B. They can't be seen now.