第251句：

What is surprising is the method psychologists at the University of Texas have come up with to keep girls from developing eating disorders.

令人惊讶的是得克萨斯大学的心理学家们所提出的让女孩们避免饮食紊乱的方法。

六级词汇讲解:

该句的主干是What is surprising is the method...。psychologists at the University of Texas have come up with是省略了that的定语从句，修饰method; to keep girls from developing eating disorders为不定式短语，对method进行补充说明。
develop在此指“出现（问题）；患（病）”。如：
The car developed engine trouble and we had to stop.
汽车发动机出了故障，我们只好停车。

六级考点归纳：

develop常见的意思还有：
“发展；进步”。如：

We cannot develop our national economy without science and technology.
没有科学技术，我们就不能发展国民经济。

“展开；（局面）进展”。如：

The fighting may develop into afull-blown war.
战斗可能会发展成全面战争。

“开发，研制”。如：

The companies will team up to develop a new racing car.
这些公司将合作研制一款新型赛车。

“使显出；出现，产生”。如：
Great differences may develop between us.
我们之间可能会产生很大的分歧。
“生长，发育；培养”。如：
1) Exercises develop muscle.
运动可以锻炼肌肉。
2) It is very important to develop persistence.
培养毅力非常重要。
“使显影，冲洗”。如：
I develop films myself.
我自己冲洗照片。