Task 1
Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A, B, C, and D. You should make the correct choice.
Social change is more likely to occur in societies where there is mixture of different kinds of people than in societies where people are similar in many ways. The simple reason for this is that there are more different ways of looking at things present in the first kind of society. There are more ideas, more disagreements in interest, and more groups and organizations with different beliefs. In addition, there is usually a greater worldly interest and greater tolerance in mixed societies. All these factors tend to speed up social change by opening more areas of life to decision. In a society where people are quite similar in many ways, there are fewer occasions for people to see the need or the opportunity for change because everything seems to be the same. And although conditions may not be satisfactory, they are at least customary and undisputed (无名争辩的).
Within a society, social change is more likely to occur more frequently and more readily in the material aspects of the culture than in the non-material, for example, in technology rather in values; in less basic and less emotional aspects of society than in their opposites; in form. rather than in substance (本质); and in elements that are acceptable to the culture rather than in a strange element.
The passage mainly discusses about______.

A. two different societies
B. the necessity of social change
C. certain factors that determine the ease with which social changes occur
D. certain factors that speed up social change