The school science club had to make a space quiz（问答测验）/kwɪz/ for primary（小学的；主要的）/ˈpraɪˌmɛri/ pupils（小学生）/ˈpjupəl/. An AI（人工智能）/ˌeɪ ˈaɪ/ tool produced the first page in English（英语）/ˈɪŋlɪʃ/, but Ava had a strange（奇怪的）/streɪnʤ/ feeling about it. One question said that the moon（月球）/mun/ was a planet（行星）/ˈplænət/ and every bright star（恒星）/stɑr/ was near Earth. Another claimed（声称）/kleɪmd/ that a robot（机器人）/ˈroʊˌbət/ had a brain（大脑）/breɪn/ exactly like a person. The clever-looking（看起来聪明的）/clever-looking/ page made no sense（道理；感觉）/sɛns/.

The group went to the lab（实验室）/læb/ to find out（查明；弄清）/faɪnd aʊt/ the truth. Chen used a physics（物理）/ˈfɪzɪks/ book to check each object（物体）/ˈɑbʤɛkt/ and unit（单元；单位）/ˈjunɪt/. Ava read a college（大学）/ˈkɑlɪʤ/ article written（写成的）/ˈrɪtən/ by an astronaut（宇航员）/ˈæstrəˌnɑt/. Their chemistry（化学）/ˈkɛmɪstri/ teacher helped them discuss（讨论）/dɪˈskəs/ how rocket（火箭）/ˈrɑkət/ fuel（燃料）/fjuəl/ worked. “Do not cheat（作弊；欺骗）/ʧit/ by copying a smart（聪明的）/smɑrt/ answer,” she said. “Ask a question（提问）/æsk ə kˈwɛʃən/, check the source（来源）/sɔrs/, and translate（翻译）/trænzˈleɪt/ only what you understand.”

They learned that the universe（宇宙）/ˈjunəˌvərs/ was far larger than the AI page suggested. A rocket could explore（探索）/ɪkˈsplɔr/ space, but a school robot could not dream（梦想）/drim/ or keep a secret（秘密）/ˈsikrɪt/. It was impossible（不可能的）/ˌɪmˈpɑsəbəl/ to visit every planet, and a movie（电影）/ˈmuvi/ could show crazy（荒唐的）/ˈkreɪzi/ things that science did not support. The students began to doubt（怀疑）/daʊt/ three more answers and expected（预期）/ɪkˈspɛkt/ to replace（替换）/ˌriˈpleɪs/ them.

On the blackboard（黑板）/ˈblækˌbɔrd/, Chen wrote（写下）/roʊt/ the correct facts with chalk（粉笔）/ʧɔk/. Ava used a pen（钢笔）/pɛn/ for the final cards and an eraser（橡皮）/ɪˈreɪsər/ when she made a mistake（犯错误）/meɪk ə mɪˈsteɪk/. One card asked pupils to spell（拼写）/spɛl/ astronaut; another joined maths（数学）/maths/ with distance（距离）/ˈdɪstəns/ in space. The team did not fear that the first draft（草稿）/dræft/ had failed（失败；不及格）/feɪl/. They believed（相信）/bɪˈliv/ that learning from（向……学习）/lərn frəm/ an error（错误）/ˈɛrər/ was part of the exam（考试）/ɪgˈzæm/ of real life.

The group recommended（推荐）/ˌrɛkəˈmɛnd/ eight clear questions instead of（而不是）/ˌɪnˈstɛd əv/ twenty weak ones. Their final task invited each pupil to invent（发明）/ˌɪnˈvɛnt/ a safe moon machine and explain its purpose. The quiz probably（很可能）/ˈprɑbəˌbli/ could not answer every mystery（谜）/ˈmɪstəri/, but it could create interest（兴趣）/ˈɪntəˌrɛst/. When the primary class arrived, no one asked for the AI page. They wanted to work in groups（分组合作）/wərk ɪn grups/ and explore the display（展览；展示）/dɪˈspleɪ/ themselves.