机器学习是一门涉及统计学、系统辨识、逼近理论、神经网络、优化理论、计算机科学和脑科学等诸多领域的交叉学科，是人工智能技术的核心
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世界上第一座智能家居是在20世界90年代建造的
A. 对
B. 错
Conversation 1
A. The man always gets poor grades for his term papers.
B. The woman should seek help from the writing center.
C. The man had his paper rejected for the third time.
D. The woman does not really care about her language problems.
Conversation 2
A. She has a keen interest in the French language and culture.
B. She wants to speak French as fluently as her grandfather.
C. She was forced by her grandfather to change her decision.
D. She thinks speaking French is a must for cultured people.
Conversation 3
A. He had a discussion about abstract theories.
B. He talked with some native speakers.
C. He had a meeting with Dr. Brown.
D. He attended a speech.
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