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值得

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Many people think that it is making such an experiment. A. worthwhile B. worth C. worthy D. valuable 选什么?顺便介绍一下worth , worthy,worthile.的用法。谢谢。。。。
值得
解题思路: 如下
解题过程:
worth , worthy,worthwhile的用法:
worth, worthy, worthwhile都是形容词,意为"值得"。
1. worth: be worth + n.  当名词为金钱时,表示"…… 值得……"
常见的有It ’s worthwhile to do./ It ’s worth(someone’s)while doing
      be worth doing sth. "……某事值得被做"
  The question is not worth discussing again and again. 这问题不值得反复讨论。
2. worthy:be worthy of +n. 当名词为抽象名词时表示"……值得……"
       be worthy to be done "某事值得被做"
  The question is not worthy to be discussed again and again.
3. worthwhile: be worthwhile to do sth  "值得做某事"
  It is worthwhile to ask him to join the club.值得邀请他加入俱乐部。

由此可知,选B最佳。由worth的用法可知,此句只适合词组be worth doing 结构。
最终答案:略