Câu hỏi và đáp án bài nghe Test 1 part 4 - IELTS Cambridge 15 - The Eucalyptus Tree in Australia

tip

Xem đáp án bên dưới.

Questions 31-40

Complete the notes below.

Write ONE WORD ONLY for each answer.

https://IELTSsongngu.com

The Eucalyptus Tree in Australia

Importance

• it provides 31 ____________________ and food for a wide range of species
• its leaves provide 32 ____________________ which is used to make a disinfectant

Reasons for present decline in number

A) Diseases
(i) 'Mundulla Yellows'

• Cause
  • lime used for making 33 ____________________ was absorbed
  • trees were unable to take in necessary iron through their roots

(ii) 'Bell-miner Associated Die-back'

• Cause
  • 34 ____________________ feed on eucalyptus leaves
  • they secrete a substance containing sugar
  • bell-miner birds are attracted by this and keep away other species

B) Bushfires
William Jackson's theory:

• high-frequency bushfires have impact on vegetation, resulting in the growth of 35 ____________________
• mid-frequency bushfires result in the growth of eucalyptus forests, because they:
  • make more 36 ____________________ available to the trees
  • maintain the quality of the 37 ____________________
• low-frequency bushfires result in the growth of 38 '____________________' rainforest, which is:
  • a 39 ____________________ ecosystem
  • an ideal environment for the 40 ____________________ of the bell-miner

Đáp án

Bấm để xem đáp án

Part 4, Questions 31-40

31. shelter
32. oil
33. roads
34. insects
35. grass(es)
36. water
37. soil
38. dry
39. simple
40. nest(s)