Initsearlyhistory,Chicagohadfloodsfrequently,especially...
問題詳情:
In its early history, Chicago had floods frequently, especially in the spring, making the streets so muddy that people, horses, and carts got stuck. An old joke that was popular at the time went something like this: A man is stuck up to his waist in a muddy Chicago street. Asked if he needs help, he replies, "No, thanks. I've got a good horse under me."
The city planner decided to build an underground drainage (排水) system, but there simply wasn't enough difference between the height of the ground level and the water level. The only two options were to lower the Chicago River or raise the city.
An engineer named Ellis Chesbrough convinced the city that it had no choice but to build the pipes above ground and then cover them with dirt. This raised the level of the city's streets by as much as 12 feet.
This of course created a new problem: dirt practically buried the first floors of every building in Chicago. Building owners were faced with a choice: either change the first floors of their buildings into basements, and the second stories into main floors, or hoist the entire buildings to meet the new street level. Small wood-frame buildings could be lifted fairly easily. But what about large, heavy structures like Tremont Hotel, which was a six-story brick building?
That's where George Pullman came in. He had developed some house-moving skills successfully. To lift a big structure like the Tremont Hotel, Pullman would place thousands of jackscrews (螺旋千斤頂) beneath the building's foundation. One man was assigned to operate each section of roughly 10 jackscrews. At Pullman's sign each man turned his jackscrew the same amount at the same time, thereby raising the building slowly and evenly. Astonishingly, the Tremont Hotel stay open during the entire operation, and many of its guests didn't even notice anything was happening. Some people like to say that every problem has a solution. But in Chicago's early history, every engineering solution seemed to create a new problem. Now that Chicago's waste water was draining efficiently into the Chicago River, the city's next step was to clean the polluted river.
5. The author mentions the joke to show ______.
A. horses were fairly useful in Chicago
B. Chicago's streets were extremely muddy
C. Chicago was very dangerous in the spring
D. the Chicago people were particularly humorous
6. The city planners were convinced by Ellis Chesbrough to_______.
A. get rid of the street dirt
B. lower the Chicago River
C. fight against heavy floods
D. build the pipes above ground
7. What can we conclude about the moving operation of the Tremont Hotel?
A. It went on smoothly as intended.
B. It interrupted the business of the hotel.
C. It involved Pullman turning ten jackscrews.
D. It separated the building from its foundation.
8. The passage is mainly about the early Chicago's ______.
A. popular life styles and their influences
B. environmental disasters and their causes
C. engineering problems and their solutions
D. successful businessmen and their achievements
【回答】
BDAC
知識點:歷史類
題型:閱讀理解
-
下列說法正確的是 A.物質發生化學反應都伴隨著能量變化B.伴有能量變化的物質變化都是化學變化C.在一個確...
問題詳情: 下列說法正確的是 A.物質發生化學反應都伴隨著能量變化B.伴有能量變化的物質變化都是化學變化C.在一個確定的化學反應關係中,反應物的總能量總是高於生成物的總能量D.放熱反應的發生無需任何條件【回答】A知識點:化學反應中的能量變化題型:選擇題...
-
某商品進價是1000元,售價為1500元.為促銷,商店決定降價出售,但保*利潤率不低於,則商店最多降 元...
問題詳情:某商品進價是1000元,售價為1500元.為促銷,商店決定降價出售,但保*利潤率不低於,則商店最多降元出售商品.【回答】450元. 知識點:一元一次不等式題型:解答題...
-
用若干個體積為1的正方體搭成一個幾何體,其正檢視、側檢視都是如圖所示的圖形,則這個幾何體的最大體積與最小體積的...
問題詳情:用若干個體積為1的正方體搭成一個幾何體,其正檢視、側檢視都是如圖所示的圖形,則這個幾何體的最大體積與最小體積的差是()A.2B.3C.4D.5【回答】解析:由正檢視、側檢視可知,此幾何體的體積最小時,底層有5個小正方體,上面有2個小正方體,共7個小正方體;體積最大時,底...
-
可吸入顆粒物(指空氣動力學直徑小於10微米的顆粒物,表示為PM10。PM2.5是指大氣中直徑小於或等於2.5微...
問題詳情:可吸入顆粒物(指空氣動力學直徑小於10微米的顆粒物,表示為PM10。PM2.5是指大氣中直徑小於或等於2.5微米的顆粒物,也稱為可入肺顆粒物)是*市大氣的一種主要汙染物,它們雖然在大氣中的含量很少,但是它對環境和人體的危害都很大。回答3-4題。3.讀*市2003年1月16...
相關文章
- Iliveinabigcitywithalotofhomelesspeople.Luckily,there'r...
- Iliveinabigcitywithalotofhomelesspeople.Luckilythere’re...
- Iliveinabigcitywithalotofhomelesspeople.Luckily,there'r...
- Inthe1960s,whilestudyingthevolcanichistoryofYellowstone...
- Iliveinabigcitywithalotofhomelesspeople.Luckily,there'r...
- (2019·全國卷Ⅰ)Duringtherosyyearsofelementaryschool(國小),Ien...
- Iliveinabigcitywithalotofhomelesspeople.Luckily,there'r...
- Iliveinacity,andIlikequietlife.Ihatenosy(愛管閒事的)neighbor...
- ThehighlightofmyjourneywastobeParis,thecityI'dalwayslon...
- Iliveinabigcitywithalotofhomelesspeople.Luckily,there'r...