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Answer key: Unit 12
Reading and Use of English | Part 7
1 1 six 2 is one 3 gapped text 4 the structure of the
text
3 1 a The article does not explain exactly how parrots
learn, but does give these suggestions for why
they have the ability to speak: their intelligence
has evolved, they can ‘vocalise’ words, they live
a long time so have time to learn.
b Yes – see paragraph 6.
c No others are mentioned (primates, e.g.
chimpanzees, can communicate but can’t speak).
2 The photos show the parrot communicating with
Dr Pepperberg and choosing letters.
4 1 D 2 G 3 C 4 E 5 A 6 B (Para F not used.)
Grammar
Nouns and articles
1 1 elephant, plant 2 trees, elephants, years
3 bark, skin, tissue 4 skin, tissue (a skin = the
whole covering of an animal, especially used when
this covering has been removed from a dead animal;
a tissue = a paper handkerchief) 5 Africa, Earth
2 1 a the taste or the drink in general b a cup of
coffee
2 a mass of hair b a single strand of hair
3 a the substance b different types of cheese
4 a heaviness b individual pieces of metal used in
weight-lifting
5 a the substance b spectacles used to help your
eyesight
6 a knowledge, understanding b events or
activities
7 a physical activity b sets of questions
3 1 The 2 a 3 a 4 a 5 Ø, Ø, Ø 6 the 7 a, a
8 the 9 the 10 Ø, a
4 (The numbers 1–10 refer to the sentences in Exercise 3.)
1 1b 2 2a 3 2d 4 2c 5 3b, 3b, 3a 6 1a 7 2a, 2b
8 1d 9 1b 10 3a, 2a
5 1 The 2 the 3 the 4 a 5 the 6 Ø 7 a 8 the
9 a 10 the 11 Ø 12 a 13 Ø 14 a
6 1 a suit and tie, a formal occasion
2 the/a job (the job = the particular one we’re
referring to)
3 the advantages and (the) disadvantages
4 the Internet
5 the homeless
6 A The most important thing
7 a the capital
8 the technology
9 a basic knowledge
10 the a degree, the work in the IT
Vocabulary
Word formation
1 apology; communication, communicator; conclusion;
conviction; description; performance, performer;
proposition, proposal; prosperity; suspect, suspicion
2 assume, behave, combine, evolve, explain, progress,
respond
3 Examples
The fraudster admitted the offence and said he
wouldn’t con'test the case.
Even though my team lost the match, it was a great
'contest.
A lot of evidence is needed if they are ever going to
con'vict him.
Three 'convicts have escaped from the prison on the
outskirts of the city.
They say the price of oil is going to in'crease.
There was a significant 'increase in rainfall last year.
Don’t in'sult me like that again.
Don’t take that as an 'insult. I’m just saying what I
think.
Many countries ex'port goods to other countries.
There was a fall in the value of our 'exports last year.
They’re going to pre'sent the best students with
special awards.
I need to buy a birthday 'present for my brother.
The company I work for pro'duces components for
laptop computers.
I always prefer to buy fresh farm 'produce if I can.
If students do well in the test, they can pro'gress to
the next level.
I think I’m making good 'progress.
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