语法填空（共10小题，满分15分）

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中的词的正确形式填空。

Although English is not as old as Chinese, it is spoken by many people around the world every day. English speakers are always making new words and we should be able to know ______46_____ most words come from.

Did you ever think about why hamburgers are called hamburgers, ____47___   (especial) when they are not made ___48___ ham? About a hundred years ago, some men went to America from Europe. They came from a big city in Germany ___49___ (call) Hamburg.

They did not speak good English, __50__   they ate good food. Some Americans saw them eating round pieces of beef. Never  ___51____ they seen such a strange way. They couldn’t help  ___52____   (ask) the Germans what it was. The Germans did not understand the question and answered, “We came from Hamburg.” One of these Americans owned a restaurant, and had an idea ___53____ he could do something new. He cooked some round pieces of beef like   ____54___ the men from Hamburg ate and sold them in quite a few countries around the world.

Whether this story is true or not, it may be considered to be an interesting ___55___.

22岁，未婚妇女，初潮16岁，以后月经周期较规律。2年前患病后经量逐渐减少，半年前闭经，基础体温呈双相型曲线。本例应考虑的疾病是（）

A.子宫颈管狭窄

B.子宫发育不良

C.子宫内膜结核

D.卵巢支持细胞-间质细胞瘤

E.垂体功能减退