Summarization (20 points,2 points each)
Read each of the following short paragraphs and complete phrase or sentence that expresses the main idea of the paragraph. The first letter of the missing word is given before the blank.
Paragraph Three
Training a dog to be a watchdog often produces unexpected results. Some dogs quickly learn the difference between unwanted people and friends. This is because their master’s welcome friends and invite them into their houses. However, some dogs will always attack the postman who comes to deliver letters.
38. Dogs are expected to be d______when trained.
【正确答案】：different
【题目解析】：P449
Summarization (20 points,2 points each) Read each of the followi
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