Madison Williams, aged 13, was studying in her bedroom in Dublin, Ohio. Suddenly, her mother, Leigh Williams, rushed in saying1 “A little boy fell into a septic tank（化粪池）, and no one can 2 him.”

    They ran to the neighbor's yard, where they found the boy's desperate mother and other people 3a septic tank opening that was slightly wider than a4. The boy, only 2, had slipped in.

    Madison quickly 5 the situation. She was the only one who could 6 through the small hole. Without 7she got on her stomach next to the opening, placed her8 out in front of her9 told the adults, “Lower me in.”

    Leigh and the others 10her waist and legs. She moved her arms and shoulders from side to side until she got through the 11 Inside, the tank was dark, and the air was sick. She used her hands to 12 the boy in the dirty water, and jammed her left wrist 13a hidden pole, injuring the muscles in her wrist and arm. Ignoring her14 Madison continued. Minutes ticked by before she15grasped his foot.

    Then, ten minutes after Madison had16 the tank, she and the boy were17. But the boy wasn't out of 18.He had been kept from oxygen long enough that he wasn't19. An adult gave him several hard hits on the back. It was only when Madison heard him cry that she knew he was 20 Madison's action made her a hero.

运用劳动者权利和义务关系对上述材料进行分析。

小林同学为了在体育中考获得好成绩，每天早晨坚持练习跳绳，临考前，体育老师记载了他5次练习成绩，分别为143，145，144，146，a，这五次成绩的平均数为144．小林自己又记载了两次练习成绩为141，147，则他七次练***均数为____．

“口红效应”源自海外对某些消费现象的描述。每当经济不景气,人们的消费就会转向购买廉价商品,而口红虽非生活必需品,却兼具廉价和粉饰的作用,能给消费者带来心理慰藉。要成为“口红”,必须满足几大条件:首先,价格够低;其次,具备心理安慰作用;最后,相比同价位的消费品,它的安慰作用更强,竞争力也就更强。下列行业有可能成为逆市上扬的“口红”的是(　　)