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【单选题】
We may assume that ______.A.
the prince of Orange-Nassau was married twice.
B.
the marriage was premised upon political consideration.
C.
some of the princes of the Holy Roman Empire were Protestants.
D.
the counts of Egmont and Homes were decapitated in retaliation for the invasions.
E.
all of the above are tru
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反馈参考答案：
举一反三
【简答题】假设字符串s="I am a student."，则s的长度是______。
【单选题】给出源字符串: String str = "i am a student"; System.out.println(str.substring(7, 14)); System.out.println(str.contains(" student")); 正确的输出结果是哪一项?
A.
student false
B.
studen false
C.
student true
D.
studen true
参考解析：
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