they ( )them so cheaply at the moment. they could charge more now.

The father as well as children () every Sunday afternoon in winter.

A.went
B.go
C.goes
D.are

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In the same way that a child must be able to move his arms and legs before he can learn to walk, (就像孩子必须在能够移动他的双手和双脚以后才能学会走路一样，)the child must physiologically be capable of producing and experiencing particular emotions before these emotions can be modified through learning. Psychologists have found that there are two basic processes by which learning takes place. One kind of learning is called 'classical conditioning'. This occurs when one event or stimulus is consistently paired with, or followed by, a reward or punishment. It is through classical conditioning that a child learns to associate his mother's face and voice with happiness and love, for he learns that this person provides food and comfort. Negative emotions are learned in a similar fashion. The second kind of learning is called 'operant conditioning'. An individual learns to do things that produce rewards in his environment and learns not to do things that produce punishments. For example, if a mother always attends to her baby when he cries and cuddles him until he is quiet, she may teach him that if he cries he will get attention from mother. Thus, the baby will learn to increase his crying in order to have his mother more. Every day, we grow and have new experiences. We constantly learn by reading, watching television, interacting with other people and so forth. This learning affects our emotions. Why is it that we learn to like some people and dislike others? If a person is nice to us, cares about us, we learn to associate this person with positive feelings, such as joy, happiness, and friendliness. On the other hand, if a person is mean to us, does not care about us, and even deliberately does things to harm us, we learn to associate this person with negative feelings, such as unhappiness, discomfort, and anger.1.The author's main purpose in writing the passage is to ______.A.give parents some advice on how to bring up childrenB.debate with psychologists on people's positive and negative feelingsC.teach children how to learn to produce and experience certain emotionsD.inform. the general reader of two basic processes of modifying emotions through learning2.In classical conditioning, a child learns to ______.A.associate one event with a reward or punishmentB.do things that produce rewardsC.receive a reward when he feel happyD.recognize his mother's face and voice3.Which of the following is a case of “operant conditioning”?A.Children learn to do things that produce punishment.B.The baby feels happy when he sees his mother's face.C.Children learn to mix with others by reading, watching TV and so forth.D.The baby increases his crying because his mother attends to him whenever he cries.4.The underlined word “fashion” can be replaced by “______”.A.vogueB.routeC.mannerD.fate5.According to the passage, positive feelings include ______.A.care, association, and nice personB.joy, happiness, and friendlinessC.comfort, cares, and angerD.reading, watching TV, and interacting with others 点击查看答案