因果条件题

　　passage 2
　　Dogs are social animals and without proper training, they will behave like wild animals. They will soil your house, destroy your belongings, bark excessively,.fight other dogs and even bite you. Nearly all behavior problems are perfectly normal dog activities that occur at the wrong time or place or are directed at the wrong thing. The key to preventing or treating behavior problems is learning to teach the dog to redirect its normal behavior to outlets that are acceptable in the domestic setting.
　　One of the best things you can do for your dog and yourself is to obedience train (驯服)it. Obedience training doesn't solve all behavior problems,but it is the foundation for solving just about any problem- Training opens up a line of communication between you and your dog. Effective communication is necessary to instruct ‘your dog about what you want it to do.
　　Training is also an easy way to establish the social rank order, When your dog obeys a simple request of “come here,sit，” it is shooting obedience and respect for you. It is not necessary to establish yourself as top dog or leader of the dog pack (群)by using extreme measures. You can teach your dog its subordinate (从属的)role by teaching it to show submission to you. Most dogs love performing tricks for you to pleasantly accept that you are in charge.
　　Training should be fun and rewarding for you and your dog. It enrich your relationship and make living together more enjoyable A well-trained dog is more confident and can more safely be allowed a greater amount of freedom than an untrained animal.

　　3. Why do pet dogs love performing tricks for their masters?
　　A. To avoid being punished,
　　B. To show their affection for their masters.
　　C. To win leadership of the dog pack-
　　D. To show their willingness; to obey

讲解答案

　　讲解答案：
　　D本题问“为什么宠物狗喜欢为主人表演技能？”根据第三段中Training is also an easy way to establish the social rank order... You can teach your dog its subordinate role by teaching it to show submission to you. Most dogs love performing tricks for you to pleasantly accept that you are in charge.(训练也是建立社会等级的方法。你可以通过教狗表示服从你，来教它扮演从属的角色。 大多数的狗都喜欢为你表演技能以此来表示乐意接受你的主宰地位。)所以被驯服的宠物狗喜欢 为人表演技能的原因是to show their willingness to obey。所以D是正确答案。