Ⅰ.阅读词汇·读懂
默想下面单词的词性及含义，不会的在□中做出标记并核对识记。
□1.tornado □2.drought □3.landslide
□4.slide □5.tsunami □6.magnitude
□7.helicopter □8.percent □9.metal
□10.unify □11.revive □12.context
□13.volcano □14.erupt □15.typhoon
□16.hurricane □17.tap □18.kit
□19.summary □20.evacuate □21.brick
□22.pipe □23.whistle □24.crack
□25.electricity □26.crash □27.emergency,
