2020年1月18日雅思阅读真题+题目+答案：Researcher on the Tree Crown

2020年1月18日雅思阅读真题+题目+答案：Researcher on the Tree Crown

A

The forest canopy – the term given to the aggregated crowns of trees in a forest – is thought to host up to 40 per cent of all species, of which ten per cent could be unique to the forest roof. “We’re dealing with the richest, least known, most threatened habitat on Earth,” says Andrew Mitchell, the executive director of the Global Canopy Programme (GCP), a collection of groups undertaking research into this lofty world. “The problem with our understanding of forests is that nearly all the information we have has been gleaned from just two meters above the soil, and yet we’re dealing with trees that grow to heights of 60 meters, or in the case of the tallest redwood 112 meters. It’s like doctors trying to treat humans by only looking at their feet.”

B

Tropical rainforest comprises the richest of ecosystems, rivalled only by coral reel for its diversity and complex interrelationships. And a great deal of that diversity lives up in the canopy – an estimated 70-90 per cent of life in the rainforest exists in the trees; one in ten of all vascular plants are canopy dwellers, and about 20-25 per cent of all invertebrates are thought to be unique to the canopy.

C

The first Briton to actually get into the canopy may have been Sir Francis Drake who, in 1573, gained his first glimpse of the Pacific Ocean from a tall tree in Darien, Panama. However, the first serious effort to reach and study the canopy didn’t begin until 1929. The Oxford University Expedition to British Guiana, led by Major RWG Hingston, still ended up help of locals when it came to building an observation platform. It was a successful expedition all the same, despite the colony’s acting governor getting stuck high up on a winched seat during a visit. In terms of canopy access, the French have proved themselves to be excellent innovators, taking things further with the development of ‘lighter-than-air platforms -balloons and related equipment, to you and me. Francis Halle; from the Laboratoire de Botanique Tropicale at Montpellier University took to a balloon in the mid-1980s in order to approach the canopy from above. His work in French Guiana was inspired by the use in Gabon of a tethered helium balloon by Marcel and Annette Hladick. Halle went one further by using a small purpose-built airship-a cigar-shaped balloon with propellers to aid manoeuvrability. “We suddenly had a mobile system that could move around the treetops; there were no other means of doing this,” says Mitchell.

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Questions 1-5

The reading Passage has seven paragraphs A-F

Which paragraph contains the following information?

Write the correct letter A-F, in boxes 1-5 on your answer sheet

1 The Scientific significance for committing canopy study.

2 The first academic research attempt mentioned to getting the top canopy.

3 The overview idea of the forest canopy and the problem of understanding the forests.

4 Recognition for a long term effect and cooperation.

5 An innovation accessing to treetop which proved to be an ultimate solution till now.

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