The Grand Canyon is located in ______ of the United States.
A. the Midwest
B. the Northeast
C. the Southwest
D. the Southeast
在 (38) 存储结构中，在元素的存储结构之上另外建立一个元素与其存储位置之间的映射关系。
A. 索引(Index)
B. 散列(Hash)
C. 链表(Link)
D. 顺序(Sequence)
对象及其类型之间的关系称为分类(Classification)。 (49) 的对象可以改变自身类型或角色。
A. 动态分类
B. 多态分类
C. 逻辑分类
D. 多重分类
"... one would have expected the episode to end there" in the fourth paragraph means that ______.
A. things might not go from bad to worse.
B. the doctor tried to cure fits.
C. more people suffered from fits.
D. the situation was further aggravated.
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