Cambridge IELTS 18 Academic Test 3 Reading Answers and Explanations

13 min read Academic & General Training

Review all 40 Cambridge IELTS 18 Academic Test 3 Reading answers with explanations. The texts cover Materials to take us beyond concrete, The steam car and The case for mixed-ability classes, with matching features, summary completion and matching headings among the principal question types.

Cambridge IELTS 18 | Academic Reading

Academic Test 3 answers with clear explanations

These Cambridge IELTS 18 Academic Test 3 Reading answers explain all 40 questions. Review Materials to take us beyond concrete, The steam car, and The case for mixed-ability classes.

40answers explained
3reading passages
60 minofficial practice time
AcademicAcademic Reading
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Cambridge IELTS 18 Academic Test 3 Reading answer key

Use these cards for quick marking. Read the detailed explanations when an answer needs more review.

1. Materials to take us beyond concrete

Questions 1 to 13
1G
2D
3C
4F
5architects
6moisture
7layers
8speed
9C
10A
11B
12D
13A

2. The steam car

Questions 14 to 26
14iii
15viii
16v
17vi
18vii
19i
20iv
21A
22C
23B
24speed
25fiftyAlso: 50
26strict

3. The case for mixed-ability classes

Questions 27 to 40
27B
28A
29C
30C
31H
32D
33F
34E
35B
36NO
37NOT GIVEN
38YES
39NO
40NOT GIVEN

Passage 1: Materials to take us beyond concrete

This passage examines why concrete creates major environmental costs. It reviews alternative building materials, including wood, bioplastics and other lower-carbon options.

Review strategyMatch ideas, not repeated words. Identify each paragraph's purpose before choosing a letter.
1an explanation of the industrial processes that create potential raw materials for concreteG

Why: The detail matches G, "Section G." The wording in the passage expresses the same idea.

2a reference to the various locations where high-rise wooden buildings can be foundD

Why: The detail matches D, "Section D." The wording in the passage expresses the same idea.

3an indication of how widely available the raw materials of concrete areC

Why: The detail matches C, "Section C." The wording in the passage expresses the same idea.

4the belief that more high-rise wooden buildings are needed before wood can be regarded as a viable construction materialF

Why: The detail matches F, "Section F." The wording in the passage expresses the same idea.

5Current environmental concerns are encouraging ____ to use wood in modern construction projects.architects

Why: The passage uses "architects." This completes the gap and follows the stated word limit.

6As ____ in the atmosphere enters wood, it increases in size.moisture

Why: The passage uses "moisture." This completes the gap and follows the stated word limit.

7____ of solid wood are glued together to create building blocks.layers

Why: The passage uses "layers." This completes the gap and follows the stated word limit.

8Wooden buildings improve on concrete-and-steel buildings in terms of the ____ with which they can be constructed and the noise generated.speed

Why: The passage uses "speed." This completes the gap and follows the stated word limit.

9The environmental advantage of cement alternatives may not be as great as initially assumed.C

Why: The detail matches C, "Anna Surgenor." The wording in the passage expresses the same idea.

10It would be hard to create a construction alternative to concrete that offers so many comparable benefits.A

Why: The detail matches A, "Chris Cheeseman." The wording in the passage expresses the same idea.

11Worries about the environment have led to increased interest in wood as a construction material.B

Why: The detail matches B, "Markus Mannström." The wording in the passage expresses the same idea.

12Expense has been a factor in the negative response to the development of new cements.D

Why: The detail matches D, "Felix Preston and Johanna Lehne." The wording in the passage expresses the same idea.

13The environmental damage caused by concrete is due to it being produced in large quantities.A

Why: The detail matches A, "Chris Cheeseman." The wording in the passage expresses the same idea.

Passage 2: The steam car

This passage follows the successes and failures of the Doble brothers' steam cars. It explains their engineering improvements, business problems and competition from petrol vehicles.

Review strategyMatch ideas, not repeated words. Identify each paragraph's purpose before choosing a letter.
14Paragraph Aiii

Why: Heading iii, "Good and bad aspects of steam technology are passed on," gives the best summary of the paragraph's main purpose.

15Paragraph Bviii

Why: Heading viii, "A better option than the steam car arises," gives the best summary of the paragraph's main purpose.

16Paragraph Cv

Why: Heading v, "Further improvements lead to commercial orders," gives the best summary of the paragraph's main purpose.

17Paragraph Dvi

Why: Heading vi, "Positive publicity at last for this quiet, clean, fast vehicle," gives the best summary of the paragraph's main purpose.

18Paragraph Evii

Why: Heading vii, "A disappointing outcome for customers," gives the best summary of the paragraph's main purpose.

19Paragraph Fi

Why: Heading i, "A period in cold conditions before the technology is assessed," gives the best summary of the paragraph's main purpose.

20Paragraph Giv

Why: Heading iv, "A possible solution to the issues of today," gives the best summary of the paragraph's main purpose.

21What point does the writer make about the steam car in Paragraph B?A

Why: Option A says "Its success was short-lived.." This matches the writer's point. The other options do not answer the question correctly.

22When building their first steam car, the Doble brothersC

Why: Option C says "needed several attempts to achieve a competitive model.." This matches the writer's point. The other options do not answer the question correctly.

23In order to produce the Model C, the Doble brothersB

Why: Option B says "raised financial capital.." This matches the writer's point. The other options do not answer the question correctly.

24A later version of the Model E raised its ____ while keeping emissions extremely low.speed

Why: The passage uses "speed." This completes the gap and follows the stated word limit.

25Under ____ cars were produced before the company went out of business.fifty

Why: The passage uses "fifty." This completes the gap and follows the stated word limit. Accepted alternative: 50.

26Model Es satisfy California’s ____ emissions laws.strict

Why: The passage uses "strict." This completes the gap and follows the stated word limit.

Passage 3: The case for mixed-ability classes

This passage examines mixed-ability teaching and academic streaming in schools. It reviews research on pupil achievement, expectations and the effects of placing students in ability groups.

Review strategySeparate a contradiction from missing information. Use only what the passage or writer states.
27The writer describes the Romeo and Juliet lesson in order to demonstrateB

Why: Option B says "how a teacher handles a range of learning needs.." This matches the writer's point. The other options do not answer the question correctly.

28What does the writer say about streaming in the third paragraph?A

Why: Option A says "It has a very broad appeal.." This matches the writer's point. The other options do not answer the question correctly.

29What idea is suggested by the reference to Mount Qomolangma in the fifth paragraph?C

Why: Option C says "students not achieving their full potential." This matches the writer's point. The other options do not answer the question correctly.

30What does the word “scaffolding” in the sixth paragraph refer to?C

Why: Option C says "the assistance given to a student in their initial stages of learning." This matches the writer's point. The other options do not answer the question correctly.

31There is very little indication that streaming leads to ____.H

Why: The correct choice is H, which means "higher achievements." This phrase completes the idea and matches the passage.

32The most significant impact is on students placed in the ____.D

Why: The correct choice is D, which means "bottom sets." This phrase completes the idea and matches the passage.

33A large proportion of them have ____.F

Why: The correct choice is F, which means "disadvantaged backgrounds." This phrase completes the idea and matches the passage.

34For the ____, there appears to be only minimal advantage.E

Why: The correct choice is E, which means "brightest pupils." This phrase completes the idea and matches the passage.

35Teachers tend to have ____ of students in streamed groups.B

Why: The correct choice is B, which means "lower expectations." This phrase completes the idea and matches the passage.

36The Vygotsky model of education supports the concept of a mixed-ability class.NO

Why: The writer presents a view that disagrees with this statement. The answer is NO.

37Some teachers are uncertain about allowing students to take on MKO roles in the classroom.NOT GIVEN

Why: The writer does not express a clear view on this point. The answer is NOT GIVEN.

38It can be rewarding to teach knowledge which you have only recently acquired.YES

Why: The writer clearly agrees with the idea in this statement. The answer is YES.

39The priority should be to ensure that the highest-achieving students attain their goals.NO

Why: The writer presents a view that disagrees with this statement. The answer is NO.

40Taking part in collaborative outdoor activities with teachers and classmates can improve student outcomes in the classroom.NOT GIVEN

Why: The writer does not express a clear view on this point. The answer is NOT GIVEN.

How to review your answers

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  2. Group mistakes by question type and reading passage.
  3. Find the exact sentence that proves each correct answer.
  4. Retake the test after reviewing your weakest question type.

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