完形填空
   A little girl went to a hospital. “I want to 1 a miracle(奇迹).” “What?” said the doctor. “My brother is badly ill, 2 my daddy says only a miracle can save my brother.” “We don’t sell miracles here, little girl. I’m 3 but I can't help you,” said the doctor. “I have the 4 to pay for it.” said the girl.
The doctor’s brother asked, “What miracle does your 5 need?” “I don't know,” she answered. “My daddy can't 6 for it, so I want to use my money.” “How much do you have?” asked the man. “A dollar and a half.” “Well,”7 the man, “a dollar and a half can buy a miracle.”
That man was a very good 8. The operation(手术) was free and her brother became well. “What's the price 9 the operation?” her mom asked. The little girl smiled. She knew exactly how 10 a miracle was—a dollar and a half with the faith(诚意) of a little girl.

用下列词语各写一个具体、优美的句子。

①倾听：

②闪耀：

③越来越……越来越……：

下图是人体眼球结构示意图，请据图分析回答：

（1）眼睛中常被称为“白眼球”的部位是____ 
（2）在眼球的成像过程中，对进入眼球的光线起折射作用的结构主要是④ ____ 。
（3）能感受外界光线刺激的是⑥____ 。
（4）眼睛近视时应配____ 透镜。
（5）眼睛是获得外界信息的重要窗口，预防近视，爱护眼睛要从小做起，从自身做起，养成良好的用眼卫生习惯，请写出两项预防近视的措施。
①____②____ 

设点F₁，F₂分别是椭圆C:$\frac{x^2}{a^2}$+$\frac{y^2}{b^2}$=1$\left(a>b>0\right)$的左、右焦点，P为椭圆C上任意一点，且$\overrightarrow{P{F}_1}·\overrightarrow{P{F}_2}$的最小值为0，则椭圆的离心率为（　　）

我国人口分布的基本特点是 (     )