1. v. conclusion n. -----------------------
2. dead adj. 死的 death n. -----------------------
3. valuable adj. ----------------------- valueless adj. -----------------------
4. announce v. 宣布 announcement n. -----------------------
5. backward 向后地 forward ----------------------- upward ----------------------- downward ----------------------- northward -----------------------
6. brightness n.明亮 bright adj. -----------------------
7. enthusiastic adj.热心的enthusiasm n. -----------------------
8. create v. 创造 creative adj. -----------------------
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