We have twenty minutes' rest between classes. Look! Most of us are playing during the break time. Some students are on the playground. They are playing basketball. Oh! A boy is running with the ball. And another is trying to stop(阻止) him. They look so cool. And there are some girls watching the game. Some students are in the classroom. They are talking. A few of them are reading and doing homework. Look! A girl is looking at the birds in the tree in front of the classroom. She must be thinking of something interesting because she is smiling. What are the teachers doing? Some of them are working in the office. And some are talking with students. Everyone is doing his or her things. They are busy but happy.
2015年3月，山东警方破获案值5.7亿元非法疫苗案，疫苗未经严格冷链存储销往24个省市，疫苗含25种儿童、成人用二类疫苗，种植该非法疫苗对相关的疾病不会起到免疫作用，对问题疫苗案看法正确的是（ ）
①经营者侵犯了消费者的合法权益
②经营者不顾公共利益的做法虽违法，但没有造成严重后果，情有可原
③经营者违背了诚信的原则
④暴露了监管部门监管缺失，监管存有漏洞
My dog is very __________. It is safe（安全的）to touch (触摸) him if you want to.
