1 . 尽管被警告过有危险，他仍在薄冰上滑冰。
________________, he still went skating on the thin ice.

2 . 词性转换
1. illegal adj.不合法的；非法的→________adv.不合法地；非法地→________adj.合法的
2. alarming adj.惊人的；使人惊恐的→________vt.使惊恐；使害怕；使担心 n．恐慌；警报；警报器→________adj.害怕的
3. extinct adj.已灭绝的→________ n．灭绝
4. aware adj.知道；发觉；有……意识的→________ n．意识→________adj.未发觉的；不知道的
5. endanger vt.使遭受危险；危害→________adj.濒危的→________n．危险→________ adj.危险的
6. concern vt.涉及；让……担忧→________ adj.担心的；关切的→________prep.关于
7. adapt vi.适应 vt.使适应；使适合→________n．适应；改编本→________adj.适应性强的
8. beauty n．美；美人；美好的东西→________adj.美丽的；美好的→________vt.美化
9. effective adj.有效的；生效的→________n．效果；影响→________vt.影响；侵袭
10. recover vi.恢复；康复 vt.找回；寻回→________n．恢复
11. intend vi.& vt.打算；计划；想要→________n．意图；打算
12. threat n．威胁→________vt.威胁；危及
13. exist vi.存在；生存→________n．存在；生存
14. unusual adj.特别的；不寻常的→________adj.常见的，寻常的

3 . 双向翻译
Dear Mr. Smith,

I want to speak to you about the state of the playground.     1    People are throwing their garbage everywhere. They leave garbage on the ground instead of using the garbage cans.       2    这对孩子们来说是一件危险的事情. Yesterday, a six-year-old kid fell and cut his hand on a broken bottle. Immediately,     3    the boy was taken to hospital. Also, the garbage makes the playground dirty and     4    没有人想去那儿

I would like you to handle this problem right away. For example,     5    you should buy more garbage cans and stop people from littering.

Please take my suggestions into serious consideration. I am waiting for your answer.

Best regards!

Jerry Broker