核心问题
Then they found something which they called radium.
有不少测试题把 anything which, something which 判为错误, 据此, 我认为上句中的 something which 应改为 something that。
词典解答
精确的说法应当是:以 anything, something, all 为中心词时,其关系代词通常用 that(见 that/which )。但是绝不可以把 which 判为错误。请看下面的例证：
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Yes, there is something about her which many men find appealing. (CIDE) 是的,她的某些方面对男人来说很有吸引力。
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Philosophy is something which cannot be defined. 哲学是一种不能下定义的事情。