题目内容：
共用题干The Difference between Man and Computer
What makes people different from computer programs?What is the missing element that our theories don't yet______(1)for?The answer is simple:people read newspaper stories for a reason:to learn more about______(2) they are interested in.Computers,on the other hand, don't.In fact,computers don't______(3)have interests;there is nothing in particular that they are trying to find out when they read.If a computerwe______(4)is to be a model of story under-standing,it should also read for a“purpose”.
Of course,people have several goals that do not make______(5) to attribute to computers.One might read a restaurant guide______(6)order to satisfy hunger or entertainment goals,or to ______(7) a good place to go for a business lunch.Computers do not get hungry,and computers do not have business lunches.
However,these physiological and social goals give______(8)to several intellectual or cognitive goals.A goal to satisfy hunger gives rise to goals to find______(9) about the name of a res-taurant which______(10) the desired type of food,how expensive the restaurant is,the location of the restaurant,etc.These are goals to______(11) information or knowledge,what we are calling ______(12) goals.These goals can be held by computers too；a computer______(13)“want”to find out the location of a restaurant,and read a guide in order to do so______(14)the same way as a person might.While such a goal would not______(15) out of hunger in the case of the computer, it might well arise out of the“goal”to learn more about restaurants.
3._________
A:once
B:even
C:ever
D:often
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