在天然的草原生态系统中，狼由于某种疾病而大量死亡，下列最符合较长时间内鹿群数量变化的曲线是

根据首字母完成单词。

1.  Mary often goes h______in the mountain.

2.  I'm p______ to have dinner with my pen pal.

3.  I thought about going to a big city, but decided on the c______

4.  My friend sent me a p______ from America last week.

5. Julia Morgan, the f______ movie star, is taking a vacation.