Cambridge ielts 1-15 series reading answers explained

18. Answer: TRUE 
Explain 
– Key words: animal, live, longer, zoo 
– As we know from question 17, the comparison between animals living in zoos and in the wild is in 
paragraph A. “The average captive animal will have a greater life expectancy compared with its wild 
counterpart”. The captive animal refers to animals in zoos. Its wild counterpart refers to animals of the 
same species in the wild. 
19. Answer: TRUE 
Explain 
– Key words: species, zoos, no longer, found, wild 
– It is stated in paragraph B that “A good number of species only exist in 
captivity”, implying that these species cannot be found in the wild. 
– The statement is TRUE. 
20. Answer: NOT GIVEN 
Explain 
– Key words: improvements, TV, wildlife, documentaries, increased, numbers, zoo visitors 

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– With regard to TV documentaries, the author only mentions (in paragraph C) that “television 
documentaries are becoming ever more detailed and 
impressive” but there is no relation between this and zoo visitor numbers. 
– This information is NOT GIVEN. 
21. Answer: FALSE 
Explain 
– Key words: zoos, excelled, information, animals, public 
– Paragraph D states that zoos can “communicate information to visitors about the animals they are 
seeing and their place in the world”. In other words, zoos can transmit information about animals to 
the public. It is mentioned, however, that “this was an area where zoos used to be lacking”, implying 
that zoos were not good at this in the past. 
– The statement is therefore FALSE. 
22. Answer: NOT GIVEN 
Explain 
– Key words: studying, animals, zoos, less, stressful, the wild 
– In comparison with studying animals in the wild, studying them in zoos is less risky and involves 
fewer variables. We only know that there is less risk for both the animals and the scientists themselves, 
but we do not know if 
studying animals in zoos is less stressful. There is no information regarding 
this.