Questions –13 The correct answer is false

10 The correct answer is TRUE: 
In the third paragraph, the text explains how a ‘tunnel was 
constructed from both ends’ and how it ‘had to meet correctly at the center of the mountain’. 
It then refers to the inscription in the Saldae aqueduct system tunnel which ‘describes how the 
two teams of builders missed each other in the mountain and how the later construction of a 
lateral link between both corridors corrected the initial error’. In other words, the two parts of the 
tunnel failed to meet.
11 The correct answer is ‘gold’: 
In the fourth paragraph, the text refers to Roman tunnels ‘built 
for mineral extraction’ and then says, ‘Traces of such tunnels used to mine gold can still be 
found at the Dolaucothi mines in Wales.’
12 The correct answer is ‘(the) architect(’s) (name)’: 
Towards the end of the fifth paragraph, 
the text says, ‘Most tunnels had inscriptions showing the names of patrons who ordered 
construction and sometimes the name of the architect.’ If a name is on an inscription in a tunnel, 
this means that this person’s name is carved on the tunnel. 
13 The correct answer is ‘(the) harbour’ or ‘(the) harbor’: 
At the end of the fifth paragraph, 
the text says that the Çevlik tunnel was ‘built to divert the floodwater threatening the harbor of 
the ancient city of Seleuceia Pieria’. The fact that the harbour was threatened by floodwater 
means that the tunnel which diverted this water was built to protect it.

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IELTS 16 Academic, Test 4 answer key with extra explanations, Reading
© Cambridge University Press and Cambridge Assessment 2021
Reading Passage 2
Questions 14–26
14 The correct answer is A: 
The writer describes a scene in which people of all ages are using 
digital devices and then makes the comment, ‘Unbeknown to most of us, an invisible, game-
changing transformation links everyone in this picture’. The writer is making the point that this 
use of technology is causing ‘an invisible … transformation’, in other words, a hidden effect. The 
phrase ‘Unbeknown to most of us’ means that most people are unaware of the transformation: 
this reinforces the idea that the effect is hidden.