问题
选择题
_______ a pair of compasses, it is easy to describe a circle.
A．Having
B．To have had
C．If you have
D．if having
答案
答案：C
句意“如果你有一只圆规，画一个圆就很容易了。”选A的话，前后逻辑主语不一致。故选C。
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_______ a pair of compasses, it is easy to describe a circle.
A．Having
B．To have had
C．If you have
D．if having
答案：C
句意“如果你有一只圆规，画一个圆就很容易了。”选A的话，前后逻辑主语不一致。故选C。