7. He has a habit of scanning the morning papers while eating breakfast.
A) looked up B) looked down C) looked into D) looked over
D/C. 分析：借助短语构成成分基本含义解题。
look up v.向上看, 尊敬, 仰望, 查寻
look down v.俯视
look into v. 向...的里面看, 窥视; 浏览
look over 翻阅，浏览 (over adv.结束, 越过, 从头到尾)
look back v.回顾, 倒退
go over v.(渡过...)转变, (对...进行)仔细检查, 复习
come over v.过来
8. A mother will sacrifice her life for her children.
A) devote B) satisfy C) attend D) contribute
A. 分析：根据词语的习惯搭配使用特点解题：
devote one’s life/ time/energy/oneself to..
satisfy purposes/needs/requirements/ be satisfied with
attend a meeting/a class/ sb.
contribute books/ money/ clothes to..
9. Coal of all kinds originated from the decay of plants.
A) arose B) suffered C) heard D) died
A. 考点：考察结构相近的短语的辨别。
arise from v.起于
hear from v.接到...的信
suffer from v.忍受, 遭受
die from v. (病以外)因某事而死
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