At a community safety class, Mr Park placed case（病例；情况）/keɪs/ cards on a table. Some described illness（疾病）/ˈɪlnəs/: a stomach（胃）/ˈstəmək/ ache（疼痛）/eɪk/, a sore（疼痛的）/sɔr/ neck（颈部）/nɛk/, a virus（病毒）/ˈvaɪrəs/, cancer（癌症）/ˈkænsər/ care, or a visit to the dentist（牙医）/ˈdɛntɪst/. Others showed a fire（火灾）/faɪər/, an earthquake（地震）/ˈərθkˌweɪk/, smoke（烟）/smoʊk/ from a firework（烟花）/ˈfaɪrˌwərk/, and a road disaster（灾难）/dɪˈzæstər/. The task was to decide which patient（病人）/ˈpeɪʃənt/ needed help at once and which could make an appointment（预约）/əˈpɔɪntmənt/.

Nina picked a card about a boy who began to bleed（流血）/blid/ after a fall. He looked pale, shook（摇动；发抖）/ʃeɪk/ badly, and said the pain was awful（很坏的；难受的）/ˈɔfəl/. “This might be shock（休克；震惊）/ʃɑk/,” she said with a nod（点头）/nɑd/. Mr Park agreed: “Please（请）/pliz/ call for help（呼救）/kɔl fər hɛlp/. Lay（放置；使躺下）/leɪ/ him down, keep him warm, and do not give him a pill（药片）/pɪl/. He must（必须）/məst/ be checked before the condition gets worse（更糟的）/wərs/.”

Another card showed a sick（生病的）/sɪk/ girl with a bit（一点）/bɪt/ of stomach pain since（因为；自从）/sɪns/ breakfast. She could speak and walk, and nothing terrible（糟糕的）/ˈtɛrəbəl/ had happened（发生）/ˈhæpən/. The class chose to look after（照顾）/lʊk ˈæftər/ her and contact（联系）/ˈkɑnˌtækt/ a doctor. A tooth ache belonged with the dentist; maybe（也许）/ˈmeɪbi/ an x-ray（X光检查）/ˈɛksˌreɪ/ would be needed later. A long disease（疾病）/dɪˈziz/ such as cancer was quite（相当）/kwaɪt/ serious, but the word itself did not always mean an emergency that minute.

The disaster cards needed different action. During an earthquake, students should stay away from（远离）/steɪ əˈweɪ frəm/ glass. During a fire, they must leave before smoke fills the room. A fireman（消防员）/ˈfaɪrmən/ may blow（吹；打击）/bloʊ/ a whistle（哨子）/ˈwɪsəl/ to direct people. “Calm down（平静下来）/kɑm daʊn/ and call when someone is in danger（处于危险中）/ɪn ˈdeɪnʤər/,” Mr Park said. Nobody should return for a bag or enter a toilet（厕所）/ˈtɔɪlət/ to hide. Firework injuries（伤害）/ˈɪnʤəriz/ can scare（使害怕）/skɛr/ people, but calm action is better than a wild rush.

The worst（最糟的）/wərst/ card used the words dead（死亡的）/dɛd/ and death（死亡）/dɛθ/ only to frighten（吓唬）/ˈfraɪtən/ readers（读者）/ˈridərz/. It was a pity（遗憾；同情）/ˈpɪti/ that it taught no action and showed poor（虚弱的；可怜的）/pur/ taste, so Nina removed（删除）/riˈmuvd/ it. The class replaced（替换）/ˌriˈpleɪst/ it with clear steps for someone who might suffer（遭受）/ˈsəfər/ a real injury（伤害）/ˈɪnʤəri/. Anyway（无论如何）/ˈɛniˌweɪ/, safety teaching was not about making every event sound worse. It was about knowing what could happen, when to call, and how to deal with（处理；应对）/dil wɪθ/ danger.