Mr. Brown is a teacher. He is from New York, America. He would like（想）to work in China because he likes our country. He thinks Chinese people are very friendly and he likes to live in China. He is happy to work in our school. He likes the school life here. He teaches English. There are 50 students in his class. Mr. Brown is kind. He and his students are good friends, too.
    Now some of Mr. Brown's students play sports on the playground（操场）. Bill and Mike play tennis. Tom and John play ping-pong. The other students play basketball. Mr. Brown is happy to play basketball with them. They have a good time.
阅读上面的短文，根据短文内容，选择最佳选项。   

下岗职工实施个体经营，三年免税；城市特困居民，可以依据标准申请最低生活保障金；工资收入超过3500元要纳税，收入越高纳税额越高。这说明

（   ）

人们通过实践活动，能动地改造客观世界，不断创造出新的东西。这主要体现了（  ）

以下标志不属于国际经济组织的是

“移动互联网+手机支付+自行车租赁”催生了共享单车这一崭新的行业，共享单车正成为经济生活的一抹亮色，小橙车、小黄车、小蓝车……彩虹般的色彩装点了街巷。共享单车改变了许多人的出行方式，与城市公交和地铁共同构成了绿色、便利的交通网络。关于共享单车，下列判断正确的有（    ）

①在使用过程中，自行车与手机是互补品

②凭借信用分可以免押金租用，说明讲诚信能降低企业成本

③减轻了高峰期公交系统的压力，表明其对公交车、地铁有一定的替代作用

④其发展为自行车制造企业带来大量订单，这反映了产业链中上、下游企业的竞争关系