Part IV Reading Comprehension （Reading in Depth） （25 minutes）
22、根据下列材料请回答22-27题：


What is responsible for processing a signal sent by people's eyes?
A．Oxygen-rich blood.
B．Neurons in the brain.
C．A small region of the brain.
D．The central part of the brain.
23、What do we learn from the third paragraph?
A．Cells in your brain use more oxygen than cells elsewher
B．It is impossible to discover which parts of the brain process informatio
C．The more oxygen a neuron consumes, the more blood it need
D．fMRI helps scientists to discover how the brain develops intelligentl
24、What does the author mean "By highlighting the areas of the brain at work" (Lines 3-4, Para. 4)?
A．Scientists who are working give light to the parts of the brai
B．Scientists use fMRI to make the parts of the brain wor
C．Scientists stop the parts of the brain from processing informatio
D．fMRI marks the parts of the brain that are processing informatio
25、What did the researchers experiment on according to the passage?
A．fMRI machine 
B．Thousands of picture
C．Animals, objects, and fruit 
D．Two volunteer
26、The best title for the passage would be__________
A．Your Thoughts Can Be Scanned
B．A Technological Dream
C．The Recent Development in Science and Technology
D．A Device that Can Help You Calculate
27、Questions27-32are based on the following passage.
　　Social change is more likely to occur in societies where there is a 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 promote social change by opening more as 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.
　　Within a society, social change is also likely to occur more frequently.and more readily in the material aspects of the culture than in the nonmaterial, for example, in technology rather than in values; in what has been learned later in life rather than what was learned early; in the less basic and less emotional aspects of society than in their opposite; in the simple elements rather than in the complex ones; in form rather than in substance; and in elements that are acceptable to the culture rather than in strange elements.
　　Furthermore, social change is easier if it is gradual. For example, it comes more readily in human relations on a continuous scale rather than one with violent changes. This is one reason why change has not come more quickly to Black Americans as compared to other American minorities, because of the sharp difference in appearance between them and their .white counterparts.
The following factors tend to promote social change except___________
A．different kinds of people
B．different points of view
C．different interests
D．different conditions
28、The expression "greater tolerance" ( Line 5, Para. 1 ) most probably refers to "__________
A．more respect for different beliefs and behaviors 
B．quicker adaptation to changing circumstances
C．greater willingness to accept social change
D．greater readiness to agree to different opinions and ideas
29、According to the passage, which of the following is true within a society?
A．Social change is less likely to occur in technology than in value 
B．What people learned in their early times tends to change quickl 
C．The basic and emotional aspects of society tend to slow down social chang
D．Strange elements are likely to quicken social chang
30、Social change is easier if it takes place __________
A．step by step
B．among Black Americans
C．between Black Americans and their white counterparts
D．between Black Americans and other American minorities
31、The passage mainly discusses_____________
A．the necessity of social change
B．certain factors that determine the ease with which social change occurs 
C．the way to slow down social change
D．how to promote social change