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外研2003课标版《Reading and vocabulary》公开课PPT课件优质课下载
moss
algae
lichen
meteorites
seal
flying bird
该公约1959年12月1日订于华盛顿，1961年6月23日生效。
1983年6月8日中华人民共和国政府交存加入书，并自该日起对我国生效。
多个合约国政府承认为了全人类的利益，南极应永远专为和平目的而使用，不应成为国际纷争的场所和对象。
The Antarctic Treaty
Let's start off!
Word Exercises
Complete the sentences with words in the box.
adapt depth explore gravity mineral nuclear radioactive rainfall surface trap(v.) treaty
1.The ________ of something is the top or outside part of it.
2.If you ________ a place, you hope to discover something there.
surface
explore
3.If you ______ to a new situation, you change.
4.A _______ is a substance that is formed naturally in the earth.
5. A _______ is a special written agreement between different countries.
6._________ is the amount of rain which falls in a particular place.
adapt
mineral
treaty