Statuses are marvelous human inventions that enable us to get along with one another and to determine where we "fit" in society. As we go about our everyday lives，we mentally attempt to place people in terms of their statuses. For example，we must judge whether the person in the library is a reader or a librarian，whether the telephone caller is a friend or a salesman，whether the unfamiliar person on our property is a thief or a meter reader，and so on.
The statuses we assume often vary with the people we encounter， and change throughout life. Most of us can， at very high speed， assume the statuses that various situations require. Much of social interaction consists of identifying and selecting among appropriate statuses and allowing other people to assume their statuses in relation to us. This means that we fit our actions to those of other people based on a constant mental process of appraisal and interpretation. Although some of us find the task more difficult than others，most of us perform it rather effortlessly.
A status has been compared to readymade clothes. Within certain limits， the buyer can choose style and fabric. But an American is not free to choose the costume of a Chinese peasant or that of a Hindu prince. We must choose from among the clothing presented by our society. Furthermore， our choice is limited to a size that will fit， as well as by our pocketbook . Having made a choice within these limits we can have certain alterations made， but apart from minor adjustments， we tend to be limited to what the stores have on their racks. Statues too come ready made， and the range of choice among them is limited.
51. In the first paragraph，the writer tells us that statuses can help us ______.
A. determine whether a person is fit for a certain job
B. behave appropriately in relation to other people
C. protect ourselves in unfamiliar situations
D. make friends with other people
52. According to the writer，people often assume different statuses ______.
A. in order to identify themselves with others
B. in order to better identify others
C. as their mental processes change
D. as the situation changes
53. The underlined word "appraisal"(Para.2) most probably means "______".
A. involvement  B. appreciation     C. judgment    D. presentation
54. In the last sentence of the second paragraph， the pronoun "it" refers to "______".
A. fitting our actions to those of other people appropriately
B. identification of other people’s statuses
C. selecting one’s own statuses
D. constant mental process
55. By saying that "an American is not free to choose the costume of a Chinese peasant or that of a Hindu prince" (Para.3)， the writer means _______.
A. different people have different styles of clothes
B. readymade clothes may need alterations
C. statuses come ready made just like clothes
D. our choice of statuses is limited