v3 · 4Section×SubCategories官方权重，与practice v12-beta双向锚点映射完成
v2 升级说明：按 ACT 官方 Test Specifications 细分 4 Section × Sub-score 分类，English / Math / Reading / Science 全部按官方 Reporting Categories 拆解，匹配 ACT Academy 官方知识点层级。
v12新增：考纲Topic↔Q编号双向锚点直达（点击Topic后Q编号直接跳题；每题q-num前Topic Code对应Syllabus对应条目）
| Section | 题数 | 时长 | 分值 | 内容 |
|---|---|---|---|---|
| English | 75 | 45 min | 1-36 | Grammar, Usage, Rhetoric |
| Math | 60 | 60 min | 1-36 | Pre-Algebra to Trigonometry |
| Reading | 40 | 35 min | 1-36 | 4 passages（Prose, Humanities, Social Science, Natural Science） |
| Science | 40 | 35 min | 1-36 | Data interpretation, Research summary, Conflicting viewpoints |
| Writing（optional） | 1 essay | 40 min | 2-12（separate） | Argumentative essay |
| Total | 215 + essay | ~3h | 1-36 composite | Composite 为 4 个 Section 的平均分 |
ACT 共 4 个必考 Section + 1 个可选 Writing。Composite 分数为 English、Math、Reading、Science 四项的平均值，写作单独计分不计入综合分。
| 知识点 | 权重 |
|---|---|
| Production of Writing | 29-32% |
| Knowledge of Language | 13-19% |
| Conventions of Standard English | 51-56% |
| 知识点 | 权重 |
|---|---|
| Pre-Algebra | 23% |
| Elementary Algebra | 17% |
| Intermediate Algebra | 15% |
| Coordinate Geometry | 15% |
| Plane Geometry | 23% |
| Trigonometry | 7% |
| 题型 | 权重 |
|---|---|
| Key Ideas & Details | ≈52% |
| Craft & Structure | ≈25% |
| Integration of Knowledge & Ideas | ≈23% |
| 题型 | 权重 |
|---|---|
| Data Representation | 38% |
| Research Summaries | 45% |
| Conflicting Viewpoints | 17% |