世界旅游组织的前身是______年成立的______。1975年正式改用现名,总部设在西班牙的______。我国于 ______年加入该组织。
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According to the author, a child with ______ is an exceptional child by itself.
() about wild plants that they decided to make a trip to Madagascar for further research.
A. So curious the couple was
B. So curious were the couple
C. How curious the couple were
D. The couple was such curious
决策系统的发展从技术层次上可划分为:专用的决策系统、决策支持系统生成器和 【13】 。
If you lives in a youth hostel,__________(旅行的总开销比住一般的旅馆要少得多).