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【单选题】
在按时间抽取的快速叶算法流程图中，需要将输入信号x[n]的序号按码位倒序的顺序排列，假设x[n] (n=0,1,2,…,15)为16点的输入序列，则下面x[n]的序号排序中，属于正确码位倒序排序的是（）A.
x [0], x [8], x [4], x [12], x [2], x [10], x [6], x [14], x [1], x [9], x [5], x [13], x [3], x [11], x [7], x [15 ]
B.
x [0], x [8], x [4], x [2], x [12], x [10], x [6], x [14], x [1], x [9], x [5], x [3], x [13], x [11], x [7], x [15]
C.
x [15] , x [14] , x [13] , x [12] , x [11] , x [10] , x [9] , x [8] , x [7], x [6], x [5], x [4], x [3], x [2], x [1], x [0]
D.
x [14] , x [12] , x [10] , x [8] , x [6], x [4], x [2], x [0], x [15] , x [13] , x [11] , x [9] , x [7], x [5], x [3] , x [1]
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举一反三
【单选题】Mary, just as did the other students, objected to the squash casserole.
A.
Mary, just as did the other students, objected to
B.
Like the other students, Mary was objectionable to
C.
Mary, like the other students, objected to
D.
Mary objected, in the manner of the other students, to
E.
Mary, as the other students, objected
【简答题】在对农业的社会主义改造中，初级农业生产合作社具有()性质。 A农民个人所有制 B社会主义萌芽 C半社会主义 D社会主义
【单选题】Why did MiShel and Carl decide not to have a boy?
A.
Because they might give birth to a blind baby.
B.
Because Carl might pass his family's disease to his son.
C.
Because the boy might become blind when he grows up.
D.
Because they wanted a daughter to balance their family.
【单选题】"Did Mary and Carl understand her?" "No. _____of them is very bright."
A.
Not neither
B.
Not one
C.
Neither
D.
No one
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