题目内容
（请给出正确答案）
[主观题]
There's a ______ in the fact that although we're living longer than ever before, people ar
e more puzzled by health issues than they ever were.
A．analogy
B．paradox
C．dilemma
D．illusion
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A.G96；S
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第4题
3、给定文法G（S): S → （A) | a A → A + S | S 非终结符S的 LASTVT集合是
A.LASTVT(S)={ +，a，) }
B.LASTVT(S)={ +，a }
C.LASTVT(S)={ +，) }
D.LASTVT(S)={ a，) }
