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【单选题】
在Scala中如何获取字符串“Hello”的首字符和尾字符()A.
"Hello"(0),"Hello"(5)
B.
"Hello".take(1),"Hello".reverse(0)
C.
"Hello"(1),"Hello"(5)
D.
"Hello".take(0), "Hello".takeRight(1)
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