2. 医学
  3. In 1912, German doctors attempted to treat children who had underactive thyroids with normal thyroid cells, but to little avail.

In 1912, German doctors attempted to treat children who had underactive thyroids with normal thyroid cells, but to little avail.

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问题 In 1912, German doctors attempted to treat children who had underactive thyroids with normal thyroid cells, but to little avail.
选项 A、by no means
B、in vain
C、of no account
D、at stake
答案B
解析 题干：1912年，德国医生尝试使用甲状腺细胞来治疗甲状腺功能低下的孩子，但丝毫不奏效。划线词to little avail的意思是“没什么用，不奏效”。by no means绝不；in vain徒劳无功；of no account“没有考虑到”；at stake“危险中”。
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