建立自然保护区的目的是保护自然环境和野生动物植物资源。[ ]
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单词拼写:根据下列各句句意和空白之后的汉语提示词,写出对应单词的正确形式,每空只写一词。
1. She was brought into hospital for _________ (观察).
2. I always __________ (后悔) that I never trained.
3. __________ (不幸), he lost two of his family in the earthquake.
4. Because of the bad weather, many _________ (航班) have been called off.
5. When the earthquake broke out, we can find everything in the house _________ (摆动) without stop.
未搭设完的脚手架,所有人员一律不准上架。