单项选择题

用Extend命令不能延伸的图形对象是（）。

A:直线
B:圆弧
C:标注的尺寸
D:矩形

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单项选择题

Which of the underline expressions is the hedging of the following sentences.
For example, it is possible to see that in January this person weighed 60.8 kg for eight days.

A．For example, it is possible to see that in January this person weighed 60.8 kg for eight days
B．For example, it is possible to see that in January this person weighed 60.8 kg for eight days
C．For example, it is possible to see that in January this person weighed 60.8 kg for eight days
D．For example, it is possible to see that in January this person weighed 60.8 kg for eight days

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房地产投资具有财务杠杆效应。（）

A．对
B．错