难度：** set on 决定 muster 积聚 spell v. 拼写，n. 一段时间 tricky 棘手的
标签: #语法
难度：*** upright 直立 arise 发生，出现 conspicuous 明显的 suggest 表明
难度：*** genetically modified 转基因的 filling 满足 fraction 部分 raise 培养
难度：****
难度：*** multiply 乘，繁殖 breakaway 脱落=shed 脱落
难度：*** The Economist is queasy about micromanaging the job of head teachers to such a degree-b
难度：*** Over the past decade the "athleisure" firm has reported