满足性质：“对于区间(1,2)上的任意$x_1,x_2(x_1\ne x_2),\left|f\left(x_1\right)-f\left(x_2\right)\right|<\left|x_1-x_2\right|$恒成立”的函数叫Ω函数，则下面四个函数中，属于Ω函数的是(　 　)

    A few years ago, I was eating dinner with my children before we went to a museum. We were talking ____ (愉快地) when a man walked up to me and asked if I had a ____dollars to give him. I replied that I didn't even have one coin on me. Of course, my kids stood up and said: “Yes, you do, mommy.” I was a little embarrassed because I felt as if they____(抓住)me not telling the truth. Normally, I don't carry lots of money in my ____, instead, I pay with my bank card everywhere I go.

    So I told the man I could u____my bank card to buy him something to eat. His disappointing____(表情) quickly changed into a smile. Then I went to get him some kinds of food. He thanked me when I h____him a bag of food. After he left. I had a talk____my children: "Usually, I don't always like giving money to everyone who asks for it. H____, I am not against meeting the needs of others as I____as I have it. "I felt good knowing that the man had a nice meal that evening.

城市路灯的照明时间受自然条件影响。下图示意某年北京市二分二至日路灯照明时间。读图，下列说法正确的是（    ）

在50束鲜花中，16束有月季花，15束有马蹄莲，21束有白兰花，有7束中既有月季花又有马蹄莲，有8束中既有马蹄莲又有白兰花，有10束中既有月季花又有白兰花，还有5束鲜花中，月季花、马蹄莲、白兰花都有．则50束鲜花中，上述三种花都没有的花束共有（　　）

       过了冬至日，白昼逐渐变长，古人认为这是天地间阳气在恢复，所以有“①____”的说法。我国民间很重视冬至，届时大家围炉溫酒，团聚闲话，把冬至当做一个重要节日，因此有“②____”的说法。冬至日，民间有“③____”的说法，在这一天给孩子吃汤圆，教导孩子一切事情都要比去年做得更好。

A．冬至大如年    B．过了冬至大一岁    C．冬至一阳生。