题干

结合材料,回答下列问题:

材料一:为保护和改善环境,防治大气污染,保障公众健康,推进生态文明建设,新修订的《中华人民共和国大气污染防治法》已于2016年1月1日起正式施行。该法规定:县级以上地方人民政府应当依据重污染天气的预警等级,停止幼儿园和学校组织的户外活动。

材料二:苏州市政府颁布的《苏州市大气重污染应急预案》规定:如果在未来2天内持续出现不利气象条件,可能出现大气重污染的情况或已出现大气重污染时,苏州将启动苏州市大气重污染应急预案。二级预警时,中小学和幼儿园停止户外活动,一级预警时,建议中小学和幼儿园停课。

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    Outside her shabby cottage, old Mrs. Tailor was hanging out laundry on a wire line, unaware that some children lay hidden in the leaves of a nearby tree watching her every move. They were determined to find out if she really was a witch.

    They watched as she took a broomstick to clean the dirt from her stone steps. But, much to their disappointment, she did not mount the broomstick and take a flight. Suddenly, the old lady's work was interrupted by the cackling of her hen—a signal that an egg had been laid in the warm nest on top of the haystack.

    The old broomstick was put aside as she hobbled off towards the haystack followed by Sooty, a black cat she had rescued from a fox trap some time back. With only three legs, it was hard for Sooty to keep up with the old lady. The cat provided proof—the children were sure that only a witch could own a black cat with three legs.

    There, standing on a wooden box, was Mrs. Tailor, stretching out to gather her precious egg. Taking the egg in one of her hands, she began to climb down when, without warning, the box broke and the old lady fell.

    "We have to get and help her," whispered Amy.

    "What if it is a trick?" replied Ben.

    "Don't be silly, Ben. If she were a witch, she would have turned us into frogs already," reasoned Meg. "Come on, Amy, let's go." The girls climbed down the tree and ran all the way to the haystack.

    Approaching carefully, they could see a wound on the old lady's face. She had knocked her head on a stone and her ankle was definitely broken. "Go and get Dad," Amy yelled to her brother. "Tell him about the accident."

    The boys did not need another excuse to leave. They ran as fast as they could for help, hoping that Mrs. Tailor would not wake and turn the girls into frogs.