单选题
AI long ago mastered chess, the Chinese board game Go and even the Rubik's Cube, ______ in just 0.38 seconds.
A、
which managed to solve
B、
which it managed to solve
C、
for which it managed to solve
D、
to which it managed to solve
【正确答案】
B
【答案解析】
人工智能很早以前就掌握了国际象棋、中国围棋,甚至魔方的玩法,而它仅用0.38秒就完成了魔方的解法。 定语从句题。定语从句的引导词which需要在从句中作主语或宾语。B选项中的it指代AI,which作solve的宾语,即the Rubik's Cube,故本题答案为B。
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