Ⅰ.单词拼写

　　1．This theory (理论) is helpful to explain how the universe began.

　　2．Across the globe (地球), sea level varies by hundreds of feet.

　　3．The little boy is interested in astronomy (天文学)．

　　4．He often says that he doesn't believe in any religion (宗教) and only believes in himself.

　　5．Unlike (不像) his brother, he is talkative and has a sense of humour.

　　6．If you multiply (乘) two and three, you will get six.

　　7．The big project has cost almost as much as one billion (十亿) dollars.

　　8．Oxygen (氧气) is a kind of gas that is necessary for animals and plants to live.

　　Ⅱ.拓展词汇

　　1．violence n．暴力→violent adj.猛烈的，激烈的→violently adv.猛烈地，激烈地

　　2．harm n．伤害，损害→harmful adj.有害的

　　3._exist vi.存在，生存→existence n．存在

　　4．puzzle vt.使迷惑→puzzled adj.迷惑的→puzzling adj.令人迷惑的

　　5．religion n．宗教，宗教信仰→religious adj.宗教的，宗教信仰的

　　[巧记单词]

派生词 violently →violent＋­ly harmful →harm＋­ful existence →exist＋­ence 　　Ⅲ.补全短语

　　1．in time　　　　　　　及时；终于

　　2．be fundamental to 对......(来说)是基本的

　　3．lay eggs 下蛋

　　4．give birth to 产生；分娩

　　5．in one's turn 轮到某人；接着

6．prevent ... from ... 阻止；制止