So little ______ about China that he could not find Beijing in the world map.

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问题 So little ______ about China that he could not find Beijing in the world map.

选项 A、the foreigner knew
B、did the foreigner know
C、the foreigner has known
D、has the foreigner known

答案B

解析 本题考查的是谓语动词时态前后一致和倒装句的用法。本句是主从复合句,后面从句的谓语动词could not find 为—般过去时,根据谓语动词时态前后一致的原则,前面主句的谓语动词know的时态也应为一般过去时;“so+形容词/副词”放在句首加强语气时,主句中的主谓语必须要倒装,即使用“助动词+主语+谓语动词原形”的结构。故选项B为正确答案。
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