A．this B．that
C．one D．it
解析：考查 it做形式宾语，真正宾语为不定式短语 to look after...。
答案：D
4．Completely lost in the exciting ______ of the football match, Tom didn‘t feel his pocket picked.
A．scene B．view
C．atmosphere D．sight
答案：C
解析：考查名词辨析。atmosphere 在此指“气氛；氛围”。
5．Many Europeans ______ the continent of Africa in the 19th century.
A．exploded B．exposed
C．explored D．expanded
答案：C
解析：句意为：许多欧洲人在19世纪对非洲大陆进行了探索。explode爆炸；expose暴露，显示；explore探索；expand扩大。
6．It’s ______ for the Shenzhou Ⅶ spaceship that every Chinese feels cheerful and proud.
A．so a successful flight
B．so successful a flight
C．such successful a flight
D．a such successful flight
答案：B
解析：考查such...that和so...that句型。句意为：对于“神七”来说，这是一次极为成功的飞行，以至于每个中国人都为之高兴和自豪。“so＋adj.＋a＋可数名词单数”或“such＋a＋adj.＋可数名词单数”。
7．He has ______ letters to answer and has to work from morning to night.
A．much B．a great deal of
C．masses of D．the number of
答案：C
解析：考查修饰名词表“大量”的词的辨析。masses of相当于plenty of，意为“许多；大量”。A、B两项用于修饰不可数名词；the number of意为“??的数目”，与题意不符。
8．(2010?陕西西安质检)We were scared to death when the fire ______. Fortunately, it was put out before it caused much damage.
A．broke out B．came out
C．gave out D．turned out
答案：A
解析：考查动词短语辨析。break out表示“(战争、打斗等不愉快事件)突然发生”；come out表示“出发，发芽”；give out表示“分发，用完”；turn out表示“结果是，生产”。语意：突如其来的大火把我们吓得要死，幸好被扑灭了，没有造成很大损失。A项符合语意。
9．At the ______ news, there was a ______ expression on his face.
A．puzzled; puzzling B．puzzling; puzzle
C．puzzling; puzzled D．puzzled; puzzle
答案：C
解析：第一空用 puzzling “令人迷惑的”修饰 news；第二空指“迷惑的表情”用 puzzled。
10．Do you think ______ life on Mars?
A．it exists B．there exists
C．it is existed D．there is existed
答案：B
解析：考查There exists ...句式，意为“某地存在某物”。exist v. 存在。
11．All possible means ______. However, nothing can ______ him dying of lung cancer.
A．has tried; stop
B．have tried; keep
C．has been tried; prevent
D．have been tried; stop
答案：D
解析：第一空主语 means 是单复数同形的名词，有 all修饰，谓语用复数，且为被动语态；第二空 stop和 prevent 都对，但 keep...from中 from不能省略。
12．______， I lost heart in English learning, but my teacher often said to me, “Keep on working hard, and you‘ll succeed______.”
A．At a time; in time B．At a time; on time
C．At one time; in time D．At one time; on time
答案：C
解析：第一空填 at one time “曾经有一段时间”，第二空填 in time “迟早”。at a time “一次”；on time “按时”。
13．(2010?北京东城期末)Water, which seems so simple and common, is ______ makes life possible.
A．what B．that
C．which D．how
答案：A
解析：考查表语从句。名词性从句的解题原则是“缺什么补什么”，此处表语从句“______ makes life possible”中缺少“主语”，同时“主语”不表示