To his disappointment, he failed to ______ himself to the new environment.

A. adopt    B. adapt     C. attach    D. adjust 《优化方案—2014高考总复习一轮用书Unit15》

该题答案为B，D为什么不对？

解析： adapt oneself to“使自己适应”。句意：令他失望的是，他未能适应新环境。例如：

The children have adapted well to the heat.

孩子们已经很适应炎热天气了。《牛津英语搭配词典》

I suggest he adapt himself to his new conditions. 

我建议他使自己适应新的环境。《英语常用词例句库》

但adjust oneself to也有“使自己适应”的意思，例如：

I adjusted myself to my new work.

我让自己能适应新工作。《牛津英语同义词词典》

She will gradually adjust to her new role.

她会渐渐适应她的新角色。《牛津英语搭配词典》

所以上题D也是正确的。