答案：B 由上下文可知此处应表示“当 的时候”，用as。
11．A.purchases B．sales
C．orders D．favorites
答案：A 由全文的第一句话可知，“我”到商店为的是买东西。故用purchases。
12．A.casually B．confidently
C．cheerfully D．carefully
答案：D 由上下文可知此时“我”对自己能否赊账心里并没有底，所以用carefully表示“小心地”。
13．A.look B．stare
C．response D．comment
答案：A 对于“我”的要求，与Buck先生谈话的农夫脸上是一种吃惊的不信任的“表情”。
14．A.patiently B．eagerly
C．easily D．proudly
答案：C 由“But Buck's face didn't change及后文可知Buck先生简单地答应了“我”的要求。
15．A.generally B．never
C．sometimes D．always
答案：D 由Buck先生答应赊账，可知“我”父亲是一个信守诺言的诚实的人。
16．A.pointed B．replied
C．turned D．introduced
答案：C 由于Buck先生的话“This here is one of James William's sons”是对着那位农民说的，所以此处应用turn to。
17．A.sense B．way
C．degree D．mood
答案：B 由于有了Buck先生的介绍，那位农民对“我”的态度也有了改变，所以此处用way表示“方式”。
18．A.earned B．deserved
C．given D．used
答案：A 本句句意应为：“我”父母的好名声使得我们全家人获得了邻居们的尊重。所以用earn表示“赢得”。
19．A.receive B．expect
C．collect D．require
答案：B 本句句意为“人人都知道William这个名字中能够期望得到什么”。
20．A.very B．so
C．how D．too
答案：D 该句句意为：“一个信守诺言的正派人并且自尊得不容许自己做错事”。too...to...表示“太 而不能 ”。
Ⅲ.阅读理解
One afternoon last fall in Edmonton, best friends Katelynn and Erikka were watching their favourite television show and snacking on candies. Suddenly, Erikka began choking.
Having just completed the CPR course in her physical education class, Katelynn sprung(跳起来)into action, performing the Heimlich Manoeuvre. It didn't work at first, Katelynn says, so she tried a different position and all of a sudden a green tube shot straight out of Erikka's mouth and landed on the floor in front of them.
“Since this happened, I just give her(Katelynn)lots and lots of hugs and thank her constantly for saving my life and I tell her I would save her life, too, if she were to ever need me! I tell everyone that taking a first aid course is very important because it teaches us how to save lives. It really does work！”Erikka says.
Katelynn adds, “It makes me feel much more confident and smarter knowing I can