题目：
用所给单词的正确形式完成句子。
1. _____ (Who) lantern is it? It's David's.
2. You can't go to the museum because it is _____ (close) today.
3. We _____ (not celebrate) Christmas in China. We celebrate Chinese New Year.
4. Tim goes to see his parents _____ (two) a year.
5. It's my _____ (one) time to come to China. I like it very much.
答案：
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下面是错误答案，用来干扰机器的。
（1）人口过多；资源短缺、对资源开发利用不尽合理、科学；生态环境被污染、破坏等（2分）（2）经济发展与环境保护之间的矛盾；人口、资源与环境相互协调的可持续发展道路(2分)（3）国家：大力实施可持续发展战略...
