When many people are worried that there are no more heroes in the modern era，two university students who lost their lives to rescue drowning children have shown that heroes still exist（存在）．
According to the Inner Mongolia Morning Post，the tragedy（悲剧） occurred on the afternoon of December 14,2002 when three school students skating on a frozen lake in Qingcheng Park in Hohhot fell through the ice into the freezing water．
More than 20 university students who happened to be near the spot immediately went to the rescue of the children．
Two children were quickly rescued，but the third died．The child's body was not found for three hours． Two of the rescuers，Liu Ye and Hao Longbiao，also died of cold and exhaustion（筋疲力尽）．
The body of Hao who took the lead in jumping into the lake was not found until the next day．
A student who was unwilling to tell his name said he and his classmates from the local college were taking photos at the lake． When they heard the children's cries for help， they went to the ice hole hand in hand to rescue the children． But the ice kept breaking， causing most of them to fall into the icy water．
Local residents held mourning ceremonies（祭奠仪式） at the lake．
Eight of the students were seriously affected by the freezing water and were being kept in hospital for further observation， but their lives were no longer in danger．
46． The underlined word “occurred” here means“＿＿＿＿”．
A． employed B． mixed C． guided D． happened
47． When the three students fell into water， the university students were ＿＿＿＿＿．
A． skating on the ice B． taking photos at the lake
C． having a picnic D． walking along the lake
48． Which of the following is TRUE according to the passage？
A． Three students died on the same day in all．
B． Hao Longbiao’s body was found on December 14,2002．
C． The university students didn’t think it dangerous to save the drowning children in the lake．
D． Local residents were not brave in face of danger．
49． It can be inferred that ＿＿＿＿．
A． people think little of the two university students' death
B． the ice on the lake wasn't strong enough to skate on
C． some students regretted for what they had done
D． heroes don't agree with the steps of modern times
50． The author wrote the passage to ＿＿＿＿．
A． warn people of the danger of skating on ice
B． call on people to learn from the brave university students
C． tell us a tragedy
D． advise university students to cherish（珍惜） their lives
B
No one is glad to hear that his body has to be cut open by a surgeon（外科医生） and part of it taken out． Today， however， we needn't worry about feeling pain during the operation． The sick person falls into a kind of sleep， and when he awakes， the operation is finished． But these happy conditions are fairly new． It is not many years since a man who had to have operation felt all its pain．
Long ago， operation had usually to be done while the sick man could feel everything． The sick man had to be held down on a table by force while the doctors did their best for him． He could feel all the pain if his leg or arm was being cut off， and his fearful cries filled the room and the hearts of those who watched．
Soon after 1770， Josept Priestley discovered a gas which is now called “laughing gas”．Laughing gas became known in America．Young men and women went to parties to try it． Most of them spent their time laughing，but one man at a party，Horace Wells，noticed that people didn't seem to feel pain when they were using this gas．He decided to make an experiment on himself．He asked a friend to help him．
Wells took some of the gas， and his friend pulled out one of Well’s teeth． Wells felt no pain at all．
As he didn't know enough about laughing gas， he gave a man less gas than he should have． The man cried out with pain when his tooth was being pulled out．
Wells tried again，but this time he gave too much of the gas，and the man died．Wells never forgot this terrible event．
51． It is ＿＿＿＿ since a man being operated felt all the pain．
A． a few more years B． not long
C． few years D． two thousand years
52． Long ago， when the sick man was operated on，he ＿＿＿＿．
A． could feel nothing B． could not want anything
C． could feel all the pain D． could do anything
53． Using the laughing gas， the people did not seem to ＿＿＿＿．
A． be afraid of anything B． feel pain
C． want to go to the parties D． be ill
54． If a man took less laughing gas than he should have when an operation went on， he ＿＿＿＿＿．
A． felt nothing B． felt very comfortable（舒服的）
C． still felt pain D． would die
55． One who took too much of the laughing gas ＿＿＿．
A． would laugh all the time B． would die
C． would never feel pain D． would be very calm
Keys: 46－50 DBABB 51－55 BCBCB
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