小明通过互联网购买了一双名牌运动鞋,付款后试穿发现质量存在问题,属伪劣产品。这时,他可采取的正确做法是( )①与网购公司有关人员协商解决②向有关部门投诉③请求消费者协会调解解决④不去追究,另外购买一双
Before our study we did not have data that could tell us __ those changes were small or large .
Generally speaking , almost all the kids are ______about how everything around them works.
Our government’s plan to fight against air pollution will focus on _____ information and handling PM2.5.
Each time I ________ a good essay when reading newspaper , I cut it out and keep it.
A harmonious society is very important , so all the laws must be strictly _________.