Câu hỏi và đáp án bài nghe Test 4 section 4 - IELTS Cambridge 7 - Monosodium Glutamate (MSG)

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Questions 31-33

Choose the correct letter, A, B or C.

Monosodium Glutamate (MSG)

31. The speaker says the main topic of the lecture is

• A. the history of monosodium glutamate.
• B. the way monosodium glutamate works.
• C. where monosodium glutamate is used.

32. In 1908, scientists in Japan

• A. made monosodium glutamate.
• B. began using kombu.
• C. identified glutamate.

33. What change occurred in the manufacture of glutamate in 1956?

• A. It began to be manufactured on a large scale.
• B. The Japanese began extracting it from natural sources.
• C. It became much more expensive to produce.

Questions 34-40

Complete the notes below.

Write NO MORE THAN TWO WORDS for each answer.

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Monosodium Glutamate (MSG)

• MSG contains:

  • glutamate (78.2%)
  • sodium (12.2%)
  • 34 ..................... (9.6%)

• Glutamate is found in foods that contain protein such as 35 ..................... and 36 ..................... .

• MSG is used in foods in many different parts of the world.

• In 1908 Kikunae Ikeda discovered a 37 ..................... .

• Our ability to detect glutamate makes sense because it is so 38 ..................... naturally.

• John Prescott suggests that:

  • sweetness tells us that a food contains carbohydrates.
  • 39 ..................... tells us that a food contains toxins.
  • sourness tells us that a food is spoiled.
  • saltiness tells us that a food contains 40 ..................... .

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Section 4, Questions 31-40

31. B
32. C
33. A
34. water
    35 & 36. IN EITHER ORDER
    • meat
    • cheese
35. 5th/new taste
36. common
37. bitterness
38. minerals