下列实验操作错误的是（   ）

外界气体进入肺的途径是（　　）

    Here is a picture. It is a picture of my  1  This is my 2. My quilt is on it. Two baseballs are under it. They are white 3. Look at my desk. A4is on it. I like computer games. A 5is on it, too. It's 9:00. My 6is in my schoolbag and two7are in it. My books are8the floor. My keys are in the desk.9is my ID card? Do you10? Oh, it's in my English book. I like my room. It's nice.

2015年6月以来，北京连续多日天蓝云白，很多朋友圈被“北京蓝”刷屏。晒蓝天、评蓝天。转发、点赞，不一而足。数据显示，今年上半年，北京市PM2.5平均浓度同比下降15.2%，依据材料，要使北京乃至全国的蓝天白云常态化，需要（    ）

①国家进一步完善治理污染、保护环境的法律法规                  ②各级政府鉴定治污信念，依法治污，创新治污措施

③党和国家将治理污染，保护环境作为当前的中心工作          ④人民群众提高环保意识，培养环保、低碳的生活方式