雅思阅读真题+题目+答案：Finches on Islands

雅思阅读真题+题目+答案：Finches on Islands

You should spend about 20 minutes on Question 1-13 which are based on Reading Passage below.

A

Today, the quest continues. On Daphne Major-one of the most desolate of the Galipagos Islands, an uninhabited volcanic cone where cacti and shrubs seldom grow higher than a researcher's knee-Peter and Rosemary Grant have spent more than three decades watching Darwin's finch respond to the challenges of storms, drought and competition for food Biologists at Princeton University, the Grants know and recognize many of the individual birds on the island and can trace the birds' lineages hack through time. They have witnessed Darwin's principle in action again and again, over many generations of finches.

B

The Grants' most dramatic insights have come from watching the evolving bill of the medium ground finch. The plumage of this sparrow-sized bird ranges from dull brown to jet black. At first glance, it may not seem particularly striking, but among scientists who study evolutionary biology, the medium ground finch is a superstar. Its bill is a middling example in the array of shapes and sizes found among Galapagos finches: heftier than that of the small ground finch, which specializes in eating small, soft seeds, but petite compared to that of the large ground finch, an expert at cracking and devouring big, hard seeds.

C

When the Grants began their study in the 1970s, only two species of finch lived on Daphne Major, the medium ground finch and the cactus finch. The island is so small that the researchers were able to count and catalogue every bird. When a severe drought hit in 1977, the birds soon devoured the last of the small, easily eaten seeds. Smaller members of the medium ground finch population, lacking the bill strength to crack large seeds, died out.

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雅思阅读真题题目：

Questions 1-4

Complete the table now.

Choose No More Than Two Words from the Reading Passage 1 for each answer.

Write your answers in boxes 1-4 on your answer sheet.

Questions 5-8

Complete the following summary of the paragraphs of Reading Passage 1, using No More Than Two Words from the Reading Passage for each answer. Write your answers in boxes 5-8 on your answer sheet.

On the remote island of Santa Cruz, Andrew Hendry and Jeffrey Podos conducted a study on reversal 5____ due to human activity. In the early 1960s medium ground finches were found to have a larger or smaller beak. But in the late 1960s and early 70s, finches with 6____  flourished. The study speculates that it is due to the growing 7____  who brought in alien plants with intermediate-size seeds into the area and the birds ate 8____  sometimes.

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