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第二节完型填空（共20小题；每小题1.5分，满分30分）
阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
Stephen Glenn is a famous scientist who has made several medical breakthroughs. When   36   why he was so much more   37   than the average person, he replied that it all came from an experience   38   his mom.
At 2, he was trying to   39   a bottle of milk from the refrigerator when he   40   his hold on the slippery bottle and it fell, spilling (洒) its contents all over the kitchen floor! When his mom came in, instead of shouting at him or   41   him a lesson, she said, “Robert, what a great mess you’ve made! I’ve   42   seen such a sea of milk. Well, now that the   43   has been done, would you please get down and   44   in the milk for a while   45   we clean it up?”
So happily he did. After that, his mom said, “Robert, whenever you make such a mess like this, you’ll have to clean it up and restore (恢复) everything to its proper   46  . So which do you prefer, a sponge, towel or mop?” He   47   the sponge and tighter they cleaned up the milk. His mom then said, “Robert, you’ve just had a   48   experiment how to carry a big milk bottle   49   with two tiny hands. Now go to the sink to fill the bottle with   50   and see if you can discover a way to carry it safely.” Instantly Robert learned that he could   51   it if he grasped the bottle at the   52  near the lip with both hands.
53  wonderful a lesson! The famous scientist then remarked it was then and there that he came to know that   54   were just opportunities for learning something new, which is what scientific experiments are all about.
Wouldn’t in be great if all parents could react the way Robert’s mom did to   55  ?
36．A．puzzled       B．explained  C．asked     D．wondered
37．A．creative       B．diligent     C．cautious    D．aggressive
38．A．beyond        B．with     C．about     D．from
39．A．deliver        B．remove     C．bring     D．make
40．A．dismissed     B．tightened  C．caught      D．lost
41．A．teaching      B．punishing  C．directing   D．taking
42．A．sometimes          B．always      C．rarely          D．mostly
43．A．experiment      B．damage     C．work     D．favor
44．A．drink         B．gather       C．swim     D．play
45．A．after         B．when     C．before      D．once
46．A．situation      B．model       C．order     D．size
47．A．chose              B．used     C．liked     D．saw
48．A．useless         B．funny       C．valid     D．failed
49．A．effectively          B．heavily     C．strongly    D．luckily
50．A．milk         B．water     C．sand     D．stones
51．A．complete     B．try       C．make     D．get
52．A．bottom        B．cover     C．outside     D．top
53．A．How         B．Too      C．Very     D．What
54．A．tests         B．mistakes   C．exercises   D．achievements
55．A．it             B．them     C．her       D．him