某校开展了以“人生观、价值观”为主题的班会活动，活动结束后，初三（1）班数学兴趣小组提出了5个主要观点并在本班50名学生中进行了调查（要求每位同学只选自己最认可的一项观点），并制成了如下扇形统计图．

（1）该班学生选择“和谐”观点的有几个人，在扇形统计图中，“和谐”观点所在扇形区域的圆心角是多少度

（2）如果该校有400名初三学生，利用样本估计选择“感恩”观点的初三学生约有多少人．

（3）如果数学兴趣小组在这5个主要观点中任选两项观点在全校学生中进行调查，求恰好选到“和谐”和“感恩”观点的概率．（用树状图或列表法分析解答）

B

    One day, a farmer was walking along a road with his son Thomas when they saw a horseshoe (马蹄铁) on the ground. The father said to his son, “Look at the horseshoe on the ground. Go and1the horseshoe and put it in your bag, my son.” But Thomas said, “If I do so, it will waste my time.” His father said2but picked it up himself. When they3a nearby town, they had a rest. There the farmer sold the horseshoe and 4some strawberries with the money.

    The father and the son went on walking. The sun was well up in the sky.They soon 5all their water and there was not a house or even a tree for them to have a rest. Thomas felt6thirsty to walk on. At this time, his father gave him a strawberry and he quickly ate it. After a while, his father gave him7strawberry and once again, his son got it quickly and put it in his mouth.

    And so they went on.The old farmer gave the strawberries and the son ate them. When Thomas had eaten up all the strawberries, his father said to him, “My dear son,8you picked up that horseshoe, you would have your own9to eat. Always remember the lesson: if you don't worry about the little things, you will find it10to do the great things.

在九年级某次体育测试中，某班参加仰卧起坐测试的一组女生（每组8人）成绩如下（单位：次/分）：45、44、45、42、45、46、48、45，则这组数据的平均数、众数分别为（   ）