20．Here came Thanksgiving Day，on which we offered some help to the poor free of charge．That is，we went out of our home and made a positive（31）C．It has become a custom that my two little children and I（32）Cthree years ago．
　　It was at noon，and they were a little hungry．My girls shouted"McDonald's，McDonald's"as we（33）Dalong a busy Houston road．Suddenly I（34）Bthat in almost every crossing I passed through stood a beggar．And then it hit me!All these beggars must be（35）B，too．Perfect!After we ate in a McDonald's，I ordered a（n）（36）A15 lunches and we set out to deliver them．We would pull alongside a（37）C，make a contribution，and tell him or her that we hoped things got better．Then we'd say，"Oh，（38）D…here's lunch．"
　　We handed our final contribution to a small girl and then immediately（39）Cback in the opposite direction for home．（40）C，the light caught us again and we were stopped at the same crossing where this small girl stood．I was（41）Band didn't know quite how to behave．
　　She made her way to our car，"No one has ever done（42）Clike this for me before，"she said with（43）A．Feeling uneasy，and wanting to move the conversation along，I asked，"So，（44）Ddo you think you'll eat your lunch？"
　　She just looked at me with her huge，tired brown eyes and said，"Sir，I'm not going to eat this lunch．"I was（45）B，but before I could say anything，she continued，"You see，I have a younger sister at home and she just loves McDonald's，but I don't have the（46）C．But you know what…tonight she is going to have McDonald's!"
　　I don't know if the kids（47）Cthe tears in my eyes．So many times I had questioned whether our acts of kindness were too（48）Bto really make a difference（49）D．at that moment，I recognized the（50）Dof Mother Teresa's words："We cannot do great things-only small things with great love．"

31．A．decision	B．choice	C．contribution	D．plan
32．A．intended	B．imagined	C．began	D．saw
33．A．walked	B．ran	C．wandered	D．drove
34．A．reminded	B．realized	C．understood	D．thought
35．A．eager	B．hungry	C．cautious	D．delighted
36．A．additional	B．expensive	C．cheap	D．unusual
37．A．girl	B．boy	C．beggar	D．stranger
38．A．in fact	B．to tell the truth	C．generally speaking	D．by the way
39．A．held	B．waved	C．turned	D．looked
40．A．Unfortunately	B．Luckily	C．Unexpectedly	D．Hopefully
41．A．at ease	B．at a loss	C．in danger	D．in a hurry
42．A．something	B．everything	C．anything	D．nothing
43．A．gratefulness	B．fear	C．sorrow	D．amusement
44．A．what	B．how	C．why	D．when
45．A．shocked	B．confused	C．pleased	D．worried
46．A．time	B．freedom	C．money	D．explanation
47．A．believed	B．felt	C．noticed	D．recognized
48．A．important	B．small	C．big	D．simple
49．A．Though	B．Also	C．Still	D．Yet
50．A．promise	B．comment	C．truth	D．spirit

19．-Sorry，I forgot to post the letter for you．
-Never mind，I ______ it myself．（　　）

	A．	post		B．	am going to post
	C．	was posting		D．	will post

18．你必须总是当心这儿的交通．
You must alwayswatch out for the traffic here．

17．因缺乏交流而引发的家庭问题越来越多．
There are more and more family problemsarising from lack of communication．

16．直到她摘下墨镜，我才认出她是一位著名的影星．
It was not untilshe took off her dark glassed that I realized she was a famous film star．

15．有了移动电话，无论在哪里，我们都可以与别人保持联系．
With mobile phones，we cankeep in touch withothers wherever we are．

14．与我们的预料相反，他比赛没有赢．
Contrary toour expectation，he didn't win the contest．

13．根据一份联合国的报告，世界上30%的人口没有干净的饮用水和医疗保健．
According to a UN report，30percent of the world population have noaccess to clean drinking water and health care．

12．汉语与西方语言不同，区别在于它不使用字母，而是用汉字表示思想、物体和行为．
The Chinese language differs from Western languagesin that，instead of an alphabet，it uses characters whichstand forideas，objects or deeds．

11．You have probably heard of homing pigeons，which usually appeared in war．From 3000B．C．to the present，homing pigeons have（31）Bas postmen．They have been especially useful for carrying messages（32）Dwar．The telegraph（电报机） is not（33）Ato carry about．Sometimes only the little pigeon can take a message where it ought to go．
In 1870，when the Prussians surrounded the city of Paris，the city was cut off from all the usual means of communication（交流）．The people（34）Cmany different ways of sending news．One way was to let go small balloons carrying mail．（35）Dof course，they only drifted（漂移）（36）Dthe wind carried them．Often they landed inside the enemy's lines．Even balloons large enough to carry a pilot could hardly be well controlled．
It was pigeons that in the end solved the （37）C．Homing pigeons were brought into Paris．Soon they were carrying letters far and wide．The enemy bought hawks to catch pigeons，but the little postmen could fly faster than their （38）A．Strangely enough，pigeons played an important（39）Bin war．
During World War I every army unit had a group of trained pigeons．Many of them were honored．Among them（40）Ban American pigeon with a French name Cher Ami，which meant"dear friend"．A group of U．S．soldiers were surrounded by the enemy．They had no food and no bullets （子弹）．They nearly died of（41）B．There was little hope for them．Cher Ami made his way（42）Dthe enemy's bullets and succeeded．At once planes（43）Cto drop food and ammunition （军火） to them．With their strength renewed，the soldiers fought back to their own army and were saved．
（44）Bcan pigeons carry the message？There were various methods．Usually the message is put into a little glass tube．The tube is tied to a leg or behind under  （45）Dor hung around the neck．

31．A．considered	B．served	C．regarded	D．made
32．A．in favor of	B．in need of	C．in charge of	D．in time of
33．A．easy	B．difficult	C．necessary	D．important
34．A．saw	B．did	C．tried	D．managed
35．A．And	B．Though	C．Since	D．But
36．A．which	B．that	C．to which	D．where
37．A．question	B．situation	C．problem	D．mystery
38．A．enemies	B．postmen	C．balloons	D．bullets
39．A．action	B．part	C．ball	D．way
40．A．were	B．was	C．be	D．had
41．A．excitement	B．hunger	C．anger	D．information
42．A．for	B．to	C．in	D．through
43．A．landed	B．found out	C．set out	D．set about
44．A．Why	B．How	C．When	D．Where
45．A．the head	B．a body	C．the foot	D．a wing