and

　　filled the oceans and seas __5__

　　oxygen. This encouraged the

　　__6__ (develop) of early shellfish and fish. Land animals such as insects, reptiles and dinosaurs and so on appeared __7__ green plants appeared. Small clever animals spread all over the earth. They are putting too much carbon dioxide into the atmosphere, which

　　__8__ (prevent) heat from the earth into space. __9__ life will continue on the earth for millions of years to come will depend on

　　whether this problem can __10__ (solve)． 课堂学案 【词块助记】 1. violent

　　adj. 猛烈的；激烈的；强暴的 1. All in all, watching the violent movies not only has bad effects on people’s mental health, but can also cause more hurts in our life. 总之，看暴力电影会影响人们的心理健康，同时在生活中也会带给我们更多的伤害。 2. A violent storm hit the city last night, which caused a lot of damage. 昨天夜里，暴风雨袭击了这座城市，造成重大损失。 3. Larry was in violent pain. As a result, he behaved violently and treated everything with violence. 拉里处于极度痛苦之中，因此他表现得很粗暴，一切都以暴力对待。 a violent attack 猛烈的攻击 a violent storm 暴风骤雨 lay violent hands on 对……使用暴力；对……行凶

　　take…by violence 抢夺…… with violence

　　猛烈地；强有力地 构词】violently adv. 猛烈地；凶狠地

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