17．Three visitors traveling on a bus began a conversation about the world's greatest wonders．
"In my opinion，"the first visitor said，"the Egyptian pyramids are the world's greatest wonder．Although they were built thousands of years ago，they are still standing．And remember：the people who built them had only simple tools．They did not have the kind of machinery that builders and engineers have today．"
"I agree that the pyramids in Egypt are wonderful，"the second visitor said，"but I do not think they are the greatest wonder．I believe computers are more wonderful than the pyramids．They have taken people to the moon and brought them back safely．In seconds，they carry out mathematical calculations that would take a person a hundred years to do．"
He turned to the third visitor and asked，"What do you think is the greatest wonder in the world？"
The third visitor thought for a long time，and then he said，"Well，I agree that the pyramids are wonderful，and I agree that computers are wonderful，too．However，in my opinion，the most wonderful thing in the world is this thermos．"And he took a thermos out of his bag and held it up．
The other two visitors were very surprised．"A thermos？"they exclaimed．"But that's a simple thing．"
"Oh，no，it's not，"the third visitor said．"In the winter you put in a hot drink and it stays hot．In the summer you put in a cold drink and it stays cold．How does the thermos know whether it's winter or summer？"
67．The underlined word"thermos"means．B
A．fridge B．bottle which can keep liquids hot or cold
C．electric fan D．a(chǎn)ir-conditioner
68．The three visitors couldn't agree on what the world's greatest wonder was becauseA．
A．they all had different ideas
B．the journey ended too soon
C．they could not think of anything really wonderful
D．they could not prove that their opinions were right
69．The first visitor thought the pyramids were the world's greatest wonder because．D
A．they were Egyptian
B．they were very beautiful
C．they could do mathematical calculations
D．they had been built with very simple tools
70．The third visitor thought a thermos was the world's greatest wonder becauseD．
A．it cost less than a computer
B．it lasted longer than the pyramids
C．the other two visitors were surprised when he told them about it
D．he thought it knew whether it was winter or summer
71．The third visitor was not very clever becauseA．
A．he did not understand how a thermos works
B．he did not know anything about computers
C．he did not think the pyramids were wonderful
D．he could not think of anything to say．
分析 本文寫了三個旅游的人在討論世界上最偉大的奇跡是什么，而最后一個男人比較不聰明，因為他認為保溫杯是最偉大的奇跡，因為他以為保溫杯可以根據(jù)季節(jié)自行調(diào)節(jié)溫度．
解答 67．答案是B．推理判斷題，根據(jù)文中句子In the winter you put in a hot drink and it stays hot．In the summer you put in a cold drink and it stays cold在冬天，你放一杯熱飲料，它會很熱，夏天你放一杯冷飲，它會冷，可以推斷這是一個保溫杯，所以答案選B．
68．答案是A．細節(jié)理解題，第二段中第一個男人認為是金字塔，第三段中第二個男人認為是電腦，第五段第三個男人認為是保溫瓶，所以題中所問三個人不能在最偉大的奇跡上意見統(tǒng)一的原因是他們有不同的主意，故選A．
69．答案是D．細節(jié)理解題，第二段第三行Although they were built thousands of years ago，they are still standing．And remember：the people who built them had only simple tools．雖然他們是幾千年前建造的，但他們?nèi)匀灰倭ⅲ涀。航ㄔ焖鼈兊娜酥挥泻唵蔚墓ぞ�，故選D．
70．答案是D．文章最后兩行How does the thermos know whether it is winter or summer？保溫杯冬天保暖，夏天保持低溫．第三個人問"保溫杯怎么知道是冬天還是夏天呢？"這是他覺得保溫杯神奇的原因．故選D．
71．答案是A．推理判斷題，第三個男人以為保溫杯能夠自己根據(jù)季節(jié)來調(diào)節(jié)溫度，而不知道真正的原因，所以說他不是很聰明．故選A．
點評 閱讀理解題測試考生在閱讀基礎(chǔ)上的邏輯推理能力，要求考生根據(jù)文章所述事件的邏輯關(guān)系，對未說明的趨勢或結(jié)局作出合理的推斷；或根據(jù)作者所闡述的觀點理論，對文章未涉及的現(xiàn)象、事例給以解釋．考生首先要仔細閱讀短文，完整了解信息，準確把握作者觀點．
