题目

need, swim, fly, feel, workWe have a lot of troubles in our life, but we have to face them. When you are 【1】 unhappy or forget how great you are, there are several ways to make you feel good about yourself.Look in the mirror(镜子) and say to yourself, “I'm a special person and there's no one in the world like me. I can do anything！” It may not sound so good, but it really 【2】！ Do something nice for someone. Helping others always makes you feel good.Learn something new! Have you always wanted to decorate your own room or learn how 【3】?Go for it! New challenges are fun and 16．如图所示，用轻杆连接一只半径为R的圆球，轻杆左端的转轴离地距离为h，现要将厚度为h的木块从球下水平匀速抽出，则所加水平力（　　）A．向左抽较小B．向左、向右抽一样大C．向右抽较小D．条件不足无法判断