第28题: [单项选择]But too much of that lengthened experience,even in the wealthy West,will be experience of poverty and neglect,______we do something about it. A. when B. Unless C. because D. if 参考答案:B 答案解析:[解析] 很多经验表明,即使在富饶的西方,也有贫穷和被忽略的经历,除非我们能为此做些什么。依题意选B。