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.

令人驚訝的是得克薩斯大學的心理學家們所提出的讓女孩們避免飲食紊亂的方法。

六級詞匯講解:

該句的主干是What is surprising is the method...。psychologists at the University of Texas have come up with是省略了that的定語從句，修飾method; to keep girls from developing eating disorders為不定式短語，對method進行補充說明。
develop在此指“出現（問題）；患（病）”。如：
The car developed engine trouble and we had to stop.
汽車發動機出了故障，我們只好停車。

六級考點歸納：

develop常見的意思還有：
“發展；進步”。如：

We cannot develop our national economy without science and technology.
沒有科學技術，我們就不能發展國民經濟。

“展開；（局面）進展”。如：

The fighting may develop into afull-blown war.
戰斗可能會發展成全面戰爭。

“開發，研制”。如：

The companies will team up to develop a new racing car.
這些公司將合作研制一款新型賽車。

“使顯出；出現，產生”。如：
Great differences may develop between us.
我們之間可能會產生很大的分歧。
“生長，發育；培養”。如：
1) Exercises develop muscle.
運動可以鍛煉肌肉。
2) It is very important to develop persistence.
培養毅力非常重要。
“使顯影，沖洗”。如：
I develop films myself.
我自己沖洗照片。