近年来，广东省新兴县非公有制经济发展非常迅猛，以温氏、凌丰等为龙头的民营经济体，推动全县的经济步入了科学发展的快车道。非公有制经济在该县的快速发展说明了（   ）

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    Friendship is a kind of human relationship. It is a human instinct to make friends. When ____ trouble, we need friends to offer us help, support and encouragement. With success achieved, we also need friends to share our joys.
    Friendship is also one of the greatest ____ (pleasure) that we can enjoy. It implies loyalty, cordiality, sympathy, affection and readiness to help. No man can make ____ most of his life  without ____ (careful) and conscientiously（认真地）struggling to win the right kind of friends as he ____ (go) along.
    Knowing how ____ (value) friendship is, we should be very careful in making friends. Real friends are those who have good character, superior ability and kindness of heart. Real friends can share all our sorrows and double all our joys. ____making friends, we should take care ____ (select) those who have such fine qualities. We should forgive their failures and do our best to help them. In short, when we have established friendship, we ought to cherish and treasure it ____ means of words and deeds. Only thus, can we develop real friendship and keep the sacred lamp of friendship ____ (burn) all of life.

近年来我国多个城市频繁出现雾霾天气，地球以其特有的方式警示我们：以牺牲环境为代价的发展不可持续．请提出一条有利于减少雾霾天气发生的措施：____．

已知抛物线E：y²=2px（p＞0）的焦点为F，过F且垂直于x轴的直线与抛物线E交于A，B两点，E的准线与x轴交于点C，△CAB的面积为4，以点D（3，0）为圆心的圆D过点A，B．

（Ⅰ）求抛物线E和圆D的方程；

（Ⅱ）若斜率为k（|k|≥1）的直线m与圆D相切，且与抛物线E交于M，N两点，求 $\overrightarrow{FM}\cdot \overrightarrow{FN}$ 的取值范围．