How do dogs challenge A: Baring their teeth. B: Wagging their tails. C: Standing firm with hair erect. D: Rubbing their nos

How do dogs challenge A: Baring their teeth. B: Wagging their tails. C: Standing firm with hair erect. D: Rubbing their nose.

In his two-hour-long lecture he made an exhaustive analysis of the issue. A: extremely thorough B: long and baring C: superficial D: unconvincing

problem 未知类型：{'label': 'questionDesc', 'content': '选出单词的同义词', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '2018年6月 四级 卷三 信息匹配 New Jersey School District Eases Pressure on Students—Baring an Ethnic Divide', 'isMemberControl': 0, 'type': 181} A: peace B: crisis C: agreement

some students’ writing 未知类型：{'label': 'questionDesc', 'content': '选出单词的同义词', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '2018年6月 四级 卷三 信息匹配 New Jersey School District Eases Pressure on Students, Baring an Ethnic Divide', 'isMemberControl': 0, 'type': 181} A: a series of tests B: a masterpiece of art C: two pieces of writing