单选题 Dogs are social animals and without proper training, they will behave like wild animals. They will spoil 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 that we learn 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 showing 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 can 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.

单选题 Behavior problems of dogs are believed to ______.
【正确答案】 A
【答案解析】[解析] 文章第一句指出“如果不对狗进行恰当的训练,它们的行为就如同其他野生动物一样”。可见狗的行为问题是由其本性所决定的,故选A。
单选题 The primary purpose of obedience training is to ______.
【正确答案】 C
【答案解析】[解析] 文章开始就说明了狗的兽性和在未训练前所具有的破坏性,对于这种情况最好的是驯服它,也正是答案C表述的。
单选题 Effective communication between a dog and its owner is ______.
【正确答案】 B
【答案解析】[解析] 文章第二段最后一句说:“有效的沟通是向狗发命令所必须的。”B项中的foundation正合此意。
单选题 Why do pet dogs love performing tricks for their masters?
【正确答案】 D
【答案解析】[解析] 见第三段最后一句“大多数狗都喜欢为你耍把戏,愉快地承认你是主管”。
单选题 When a dog has received effective obedience training, its owner ______.
【正确答案】 C
【答案解析】[解析] 见最后一段最后一句。“一只训练有素的狗更自信,给它更多的自由时会比未经训练的狗更安全。”