背 单 词
Ⅰ.阅读单词
1．a tube of toothpaste 一管牙膏
2．be drowned in the tsunami 被海啸淹没
3．in an emergency 在紧急关头
4．put a satellite in orbit 把人造卫星送入轨道
5．be annoyed by a mosquito被一只蚊子惹恼
6．escape from avalanche and landslide
逃离雪崩和滑坡
7．extreme climates such as hurricane, typhoon and blizzard 极端气候如飓风、台风和暴风雪
