What kind of method was used in AlphaGo?
A. Combining an advanced tree search with deep neural networks.
B. Constructing a search tree over all possible positions.
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What are the actual results of this research?
AlphaGo beat top computer Go programs.
B. AlphaGo beat the legendary Lee Sedol.
C. AlphaGo beat European Go champion Fan Hui.
The four essential arts required of any true Chinese scholar refer to music, chess, calligraphy and painting.
A. 对
B. 错
Process description makes use of imperative sentences and the past tense.
A. 对
B. 错
实验室和工业上常用的有机溶剂萃取剂，易挥发，不燃烧，常用作冷冻剂和灭火剂是化合物是（）
A. 氯仿
B. 二氯甲烷
C. 甲烷
D. 四氯化碳
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