题目内容：
Man and ComputerWhat makes people different from computer programs? What is the missing element that our theories don't yet 51 for? The answer is simple: People read newspaper stories 52 a reason to learn more about what they are interested in. Computers, on the other hand, don't. In fact, computers don't 53 have interests; there is nothing in particular that they are trying to find out when they read. If a computer 54 is to be a model of story understanding, it should also read for a “purpose”.
Of course, people have several goals that do not make 55 to attribute to computers. One might read a restaurant guide in order to satisfy hunger or entertainment goals, or to 56 a good place to go for a business lunch. Computers do not 57, and computers do not have business lunches.
However, these physiological and social goals give 58 to several intellectual or cognitive(认知的) goals. A goal to satisfy hunger gives rise to goals to find 59 about the name of a restaurant which serves the desired type of food, how expensive the restaurant is, the 60 of the restaurant, etc. These are goals to 61information or knowledge, what we are calling 62 goals. These goals can be held by computers too a computer might “want” to find out the location of a restaurant, and read a guide in order to do so 63 the same way as a person might. While such a goal would not 64 out of hunger in the case of the computer, it might 65 rise out of the “goal” to learn more about restaurants.回答第51空。 A．A express
B．B explain
C．C account
D．D count
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