Passage 1: The Engineering of Roman Aqueducts
AFor its first several centuries, Rome relied for water on the Tiber, on shallow wells, and on a handful of springs within the city walls, sources that grew increasingly inadequate as the population expanded and the river itself became fouled by waste. The solution, first adopted in 312 BC, was the aqueduct: a channel that carried water by gravity alone from a distant, elevated source to the city, without pumps of any kind. The Aqua Appia, commissioned under the censorship of Appius Claudius Caecus, ran for roughly sixteen kilometres and lay almost entirely underground; its success established an engineering template that Roman surveyors and builders would repeat and refine for centuries afterwards.
BThe defining constraint of any aqueduct was gradient: water would only flow if the channel descended, however gently, along its entire length, and surveyors had to maintain that descent across dozens of kilometres of uneven terrain without the benefit of modern levelling instruments. Roman engineers achieved this using tools such as the chorobates, a long wooden bench fitted with a water-filled groove that revealed any deviation from true level, and the groma, a simple cross-staff used to plot straight lines and right angles. Where the land itself sloped correctly, the channel was cut directly into the ground or lined with masonry beneath the surface; only where a valley interrupted the route did builders resort to raised arcades of arches, and only where solid rock stood in the way did they tunnel through it rather than around it.
CPopular imagery of Roman aqueducts, dominated by monumental arched bridges such as the Pont du Gard, gives a misleading impression of how these systems were actually built. Across the network supplying Rome itself, engineers estimated that raised arcades carried only a small fraction of the total channel length, with the great majority running underground in covered trenches or rock-cut tunnels, both cheaper to build and far less vulnerable to sabotage, frost damage or enemy attack. The channel, known as the specus, was typically lined with a waterproof cement called opus signinum, a mixture of crushed pottery and lime that resisted the slow erosion of constantly flowing water. At intervals along the route, settling tanks allowed silt and debris to fall out of suspension before the water continued onward, and inspection shafts, sunk from the surface down to the buried channel, let maintenance crews enter without excavating the entire structure.
DOn reaching the city, water passed through a distribution tank known as the castellum divisorium, where it was divided among three broad categories of user according to a fixed order of priority. Public fountains and basins, freely accessible to any resident, received the first and most secure share, followed by public baths and other civic establishments; only the remainder, and only when supply allowed, was diverted to private households, which paid a fee calibrated to the diameter of the pipe drawing from the mains. This ordering reflected a deliberate civic principle: a wealthy household's private supply could legally be reduced or cut in times of shortage, but the public fountains, on which poorer citizens depended entirely, were never meant to run dry.
EMaintaining so extensive a network required a standing bureaucracy. From the reign of Augustus onward, a senior official titled the curator aquarum oversaw the aqueducts' upkeep, backed by a permanent workforce of several hundred slaves and freedmen trained in surveying, masonry and plumbing. The most detailed surviving account of this administration comes from Sextus Julius Frontinus, who held the post around AD 97 and wrote a technical treatise describing each aqueduct's course, capacity and legal status in exhaustive detail. Frontinus devoted considerable attention to a persistent problem: unauthorised tapping of the mains by private individuals seeking free water, a practice so widespread that he described entire sections of pipe riddled with illicit punctures, and he pressed for stricter enforcement against the plumbers who, he claimed, were often complicit in the theft they were paid to prevent.
FBy the early third century AD, eleven aqueducts converged on Rome, together capable of delivering a volume of water per resident that many modern cities would struggle to match. The system's decline followed the empire's own: sieges in the sixth century saw several channels deliberately cut to deprive the city of water, and without the administrative capacity to repair them, long stretches fell into disuse and their arches were gradually stripped for building stone. Not every aqueduct disappeared, however; sections of the Aqua Virgo were restored during the Renaissance and still feed fountains in central Rome today, a rare case of a two-thousand-year-old water system remaining in continuous, if intermittent, use. Modern engineers studying the surviving structures have noted how closely their gradient calculations approach what could be achieved without electronic instruments, a testament to a surveying tradition perfected long before the tools existed to make it easy.
- specus:
- the covered channel through which an aqueduct's water flowed
- curator aquarum:
- the Roman official responsible for overseeing the aqueduct system's maintenance
أسئلة النص 1
Do the following statements agree with the information given in Reading Passage 1? Write TRUE if the statement agrees with the information, FALSE if the statement contradicts the information, NOT GIVEN if there is no information on this.
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1The Aqua Appia was funded by contributions from wealthy private citizens.
TRUE / FALSE / NOT GIVEN
اعرض الإجابة
NOT GIVEN
"'The Aqua Appia, commissioned under the censorship of Appius Claudius Caecus, ran for roughly sixteen kilometres...' (Paragraph A)"
ليش صحيح: النص يذكر من أمر ببناء القناة لكنه لا يذكر أبدًا مصدر التمويل أو مساهمات مواطنين أثرياء.
ليش الباقي خطأ: ليست TRUE لعدم وجود تأكيد لمصدر التمويل، وليست FALSE لعدم وجود نفي صريح له أيضًا.
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2The Aqua Appia carried water without the use of any pumps.
TRUE / FALSE / NOT GIVEN
اعرض الإجابة
TRUE
"'a channel that carried water by gravity alone... without pumps of any kind' (Paragraph A)"
ليش صحيح: إعادة صياغة مباشرة لحقيقة مؤكدة في النص.
ليش الباقي خطأ: ليست FALSE لعدم وجود تناقض، وليست NOT GIVEN لأن الحقيقة مذكورة صراحة.
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3Roman surveyors used the chorobates to check whether a channel's gradient remained level.
TRUE / FALSE / NOT GIVEN
اعرض الإجابة
TRUE
"'the chorobates, a long wooden bench fitted with a water-filled groove that revealed any deviation from true level' (Paragraph B)"
ليش صحيح: إعادة صياغة مباشرة لوظيفة الأداة كما وصفها النص.
ليش الباقي خطأ: ليست FALSE لعدم وجود تناقض، وليست NOT GIVEN لأن الوظيفة مذكورة بوضوح.
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4Raised stone arcades carried the greater part of the aqueduct network's total length.
TRUE / FALSE / NOT GIVEN
اعرض الإجابة
FALSE
"'raised arcades carried only a small fraction of the total channel length, with the great majority running underground' (Paragraph C)"
ليش صحيح: العبارة تدّعي أن الأقواس حملت الجزء الأكبر، بينما النص يقول صراحة إنها حملت جزءًا صغيرًا فقط.
ليش الباقي خطأ: ليست TRUE بسبب التناقض الصريح، وليست NOT GIVEN لأن النسبة مذكورة بوضوح.
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5During a water shortage, private households received priority over public fountains.
TRUE / FALSE / NOT GIVEN
اعرض الإجابة
FALSE
"'Public fountains and basins... received the first and most secure share... only the remainder... was diverted to private households' (Paragraph D)"
ليش صحيح: العبارة تعكس ترتيب الأولوية الفعلي المذكور في النص.. الينابيع العامة كانت لها الأولوية.
ليش الباقي خطأ: ليست TRUE بسبب التناقض المباشر في الترتيب، وليست NOT GIVEN لأن الترتيب مذكور بوضوح.
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6Frontinus reported that illegal tapping of the aqueduct pipes was a widespread problem.
TRUE / FALSE / NOT GIVEN
اعرض الإجابة
TRUE
"'unauthorised tapping of the mains by private individuals... a practice so widespread that he described entire sections of pipe riddled with illicit punctures' (Paragraph E)"
ليش صحيح: إعادة صياغة مباشرة لما وثّقه فرونتينوس عن انتشار المشكلة.
ليش الباقي خطأ: ليست FALSE لعدم وجود تناقض، وليست NOT GIVEN لأن المشكلة موثقة بوضوح.
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7Every aqueduct that once supplied Rome fell completely out of use after the fall of the empire.
TRUE / FALSE / NOT GIVEN
اعرض الإجابة
FALSE
"'Not every aqueduct disappeared, however; sections of the Aqua Virgo were restored... and still feed fountains in central Rome today' (Paragraph F)"
ليش صحيح: النص ينفي صراحة أن كل القنوات اختفت.. قناة أكوا فيرجو استمرت جزئيًا حتى اليوم.
ليش الباقي خطأ: ليست TRUE بسبب التناقض الصريح، وليست NOT GIVEN لأن الاستثناء مذكور بوضوح.
Complete the notes below. Choose ONE WORD ONLY from the passage for each answer.
Rome's earliest sources: the Tiber, wells, and a few natural (8) ________ within the city walls
Surveying tool used to check that a channel's gradient stayed level: the (9) ________
Most of the aqueduct network ran underground rather than on raised (10) ________
The specus (channel) was lined with opus signinum, made from crushed pottery and (11) ________
At the castellum divisorium, public (12) ________ received the first and most secure share of water
Frontinus wrote a technical (13) ________ describing each aqueduct's course, capacity and legal status
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8Question 8
اعرض الإجابة
springs
"'a handful of springs within the city walls' (Paragraph A)"
ليش صحيح: الكلمة مأخوذة حرفيًا من النص.
ليش الباقي خطأ: أي كلمة أخرى (مثل wells) لا تطابق موضع الفراغ بالتحديد.
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9Question 9
اعرض الإجابة
chorobates
"'the chorobates, a long wooden bench...' (Paragraph B)"
ليش صحيح: الاسم الدقيق للأداة المستخدمة للتحقق من استواء المنحدر.
ليش الباقي خطأ: كلمات أخرى (مثل groma، أداة مختلفة) غير مطابقة لهذا الغرض.
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10Question 10
اعرض الإجابة
arcades
"'raised arcades carried only a small fraction...' (Paragraph C)"
ليش صحيح: الكلمة الدقيقة التي تصف البديل عن الأنفاق الأرضية.
ليش الباقي خطأ: كلمات أخرى (مثل bridges) غير مستخدمة حرفيًا في هذا الموضع.
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11Question 11
اعرض الإجابة
lime
"'opus signinum, a mixture of crushed pottery and lime' (Paragraph C)"
ليش صحيح: الكلمة الدقيقة للمكوّن الثاني في خليط عزل المياه.
ليش الباقي خطأ: كلمات أخرى (مثل cement) ليست الكلمة الحرفية المستخدمة في وصف الخليط.
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12Question 12
اعرض الإجابة
fountains
"'Public fountains and basins... received the first and most secure share' (Paragraph D)"
ليش صحيح: الكلمة الدقيقة للمرفق الذي حصل على الأولوية القصوى.
ليش الباقي خطأ: كلمات أخرى (مثل baths، المرتبة الثانية) لا تطابق الأولوية الأولى المطلوبة.
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13Question 13
اعرض الإجابة
treatise
"'wrote a technical treatise describing each aqueduct's course, capacity and legal status' (Paragraph E)"
ليش صحيح: الكلمة الدقيقة لنوع الوثيقة التي كتبها فرونتينوس.
ليش الباقي خطأ: كلمات أخرى (مثل report أو book) ليست الكلمة المستخدمة حرفيًا في النص.