Climbing Mount Tai great skills and not without risk.A.requires; isB.required; wasC.required; areD.r

题目简介

Climbing Mount Tai great skills and not without risk.A.requires; isB.required; wasC.required; areD.r

题目详情

Climbing Mount Tai           great skills and           not without risk.
A.requires; isB.required; wasC.required; areD.required; were
题型:单选题难度:中档来源:不详

答案

A
本题考查时态。and连接两个并列的谓语动词,陈述的是客观事实,用一般现在时;主语都是Climbing Mount Tai。Doing 形式作主语谓语动词用单数。

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