At the start of a cross-subject（语境补充词）/cross-subject/ challenge, Asha's team received a real case（病例；情况）/keɪs/ rather than a textbook（教科书）/'tekstbuk/ exercise. The opening evidence connected billion（十亿）/ˈbɪljən/, biology（生物学）/bai'ɒlәdʒi/, bite（咬、一口）/bait/, bitter（苦的；痛苦的）/ˈbɪtər/, blame（过失、责备）/bleim/, blank（空格、空白）/blæŋk/, bleed（流血、悲痛）/bli:d/, bless（祝福、祈佑）/bles/, blog（博客）/blɔg/, boil（煮沸、沸腾）/bɒil/, bomb（炸弹）/bɒm/, bond（捆绑物、结合）/bɒnd/, bone（骨头、骨）/bәun/, and boot（长靴、踢）/bu:t/. The links looked unusual, but each detail came from a witness, label, form, or measurement（尺寸、度量）/'meʒәdmәnt/ in the case file. The team has already reviewed the complete plan.

A second folder added border（边缘、边境）/'bɒ:dә/, botanical（植物性药材）/bә'tænikәl/, bother（烦扰、迷惑）/'bɒðә/, bounce（跳、跳跃）/bauns/, bound（跳跃、弹起）/baund/, boundary（边界、分界线）/'baundri/, bow（弓、眼睛框）/bәu.bau/, bowling（保龄球戏）/'bәuliŋ/, boxing（拳击）/'bɒksiŋ/, branch（树枝；分支）/brænʧ/, breast（胸部、乳房）/brest/, breath（一口气；呼吸）/breθ/, breathe（呼吸）/ˈbriːðɪŋ/, and bride（新娘）/braid/. Some entries described people and places; others recorded objects, actions, or changing conditions. The students sorted each clue by time and source instead of forcing an early answer. The final choice was explained to everyone at the meeting.

The hardest set included bridegroom（新郎）/'braidgrum/, brilliant（光辉的、灿烂的）/'briljәnt/, broad（宽阔部分）/brɒ:d/, buffet（自助餐、小卖部）/'bʌfit/, bunch（串、束）/bʌntʃ/, bury（埋葬、埋藏）/'beri/, butcher（屠夫、肉商）/'butʃә/, butter（黄油）/ˈbətər/, button（钮扣、按钮）/'bʌtәn/, cabbage（卷心菜）/ˈkæbɪdʒ/, cafe（咖啡馆、酒店）/kɑ:'fei/, cafeteria（自助餐厅）/.kæfi'tiәriә/, cage（笼、牢房）/keidʒ/, and calligraphy（笔迹、书法）/kә'ligrәfi/. Asha checked spelling and context while a partner marked facts that could be tested. Mina, who led（lead的过去式和过去分词）/led/ the discussion（讨论）/dɪˈskʌʃn/, asked for clear evidence. Then the supervisor（管理者、监督者）/.sju:pә'vaizә/ said, “Do not hide an awkward clue merely because it weakens（削弱、减弱）/'wi:kәn/ your first idea.”

The last working board brought together calm（平静下来、镇静）/kɑ:m/, calorie（卡路里（热量单位））/'kælәri/, camel（骆驼）/ˈkæməl/, campus（校园、大学生活）/'kæmpәs/, canal（运河、水道）/kә'næl/, cancer（癌症）/ˈkænsər/, canteen（水壶、军中俱乐部）/kæn'ti:n/, capacity（容量、能力）/kә'pæsiti/, capsule（胶囊、蒴果）/'kæpsju:l/, captain（队长；船长）/ˈkæptən/, carpet（地毯、地毯状物）/'kɑ:pit/, carve（雕刻、切开）/kɑ:v/, case, and cast（演员阵容、投掷）/kɑ:st. kæst/. The group compared the four boards, removed repeated claims, and wrote（写下）/roʊt/ a short reason beside every decision（决定）/dɪˈsɪʒn/. If the first method fails, we can try another one. That rule helped them correct two mistakes without blaming a teammate（队友）/'ti:mmeit/.

They would carry out（开展；执行）/ˈkɛri aʊt/ a careful review before they could draw a conclusion（得出结论）/drɔ ə kənˈkluʒən/. The answer must be based on（以……为依据）/bi beɪst ɔn/ evidence. Everyone would have access to（有机会使用；可获取）/hæv ˈækˌsɛs tɪ/ the same file, focus on（集中于）/ˈfoʊkɪs ɔn/ the task, and refer to（查阅；提到）/rɪˈfər tɪ/ original notes. In contrast（相比之下）/ɪn ˈkɑntræst/, guesses would be rejected; in addition（此外）/ɪn əˈdɪʃən/, every change needed a reason. The completed record told（告诉）/toʊld/ a clearer story than the first draft. It did not pretend that every clue was equally important; it showed how disciplined reading, calm cooperation（合作、协力）/kәu.ɒpә'reiʃәn/, and a checkable（语境补充词）/checkable/ decision could turn a crowded case into useful（有用的）/ˈjuːsfəl/ action.