请教96-01-18

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18. Mount Rushmore National Memorial in South Dakota has a heads of four presidents of the United States carved into its face.

答案：B

分析：不定冠词a后面一般跟单数名词，根据题意，此处应改为定冠词。

改正：a → the

参考译文： 南达科他州的罗斯摩尔山国家纪念公园有美国四大总统的雕像。

没太明白carved into its face 修饰的谁，its又指代的谁呢？谢谢

爱无伤

have sth. done结构

its指Mount Rushmore National Memorial

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thx