There ought to be less anxiety over the perceived risk of mountain climbing than _____ in the public mind today.

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问题 There ought to be less anxiety over the perceived risk of mountain climbing than _____ in the public mind today.

选项 A、exists
B、exist
C、existing
D、to exist

答案A

解析 此句中的than是关系代词,相当于引导了一个定语从句,由于前部分主语是anxiety,从句主语也应是anxiety,因此从句谓语动词应使用第三人称单数,故选项A正确。
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