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题型:语法填空-短文语填 难度:0.4 引用次数:400 题号:9292238
Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

Surprise! A New Penguin

A team of scientists in New Zealand recently came across the remains of a previously unknown species of penguin—by mistake. The discovery of the Waitaha penguin species, which has been extinct for 500 years, is exciting news for the scientific community     1     it gives new insight into how past extinction events can help shape the present environment.

The researchers uncovered the Waitaha penguin remains while studying New Zealand’s rare yellow-eyed penguin. The team wanted to investigate the effects     2     humans have had on the now endangered species. They studied centuries-old bones from     3     they thought were yellow-eyed penguins and compared them with the bones of modern yellow-eyed penguins. Surprisingly, some of the bones were older than     4     (expect). Even more shockingly, the DNA in the bones indicated that they did not belong to yellow-eyed penguins. The scientists concluded that these very old bones     5     have belonged to a previously unknown species, which they named the Waitaha penguin.

By studying the bones, scientists further concluded that the Waitaha penguin was once native     6     New Zealand. But after the settlement of humans on the island country, its population     7     (wipe) out.

Based on the ages of the bones of both penguin species, the team discovered a gap in time between the disappearance of the Waitaha and the arrival of the yellow-eyed penguin. The time gap indicates that the extinction of the Waitaha penguin created the opportunity for the yellow-eyed penguin population     8     (migrate) to New Zealand.

    9     yellow-eyed penguins thrived (兴盛) in New Zealand for many years, that species now also faces extinction. The yellow-eyed penguin today is considered one of the world’s     10     (rare) species of penguin, with an estimated population of 7,000 that is now the focus of an extensive conservation effort in New Zealand.

【知识点】 动物 科普知识

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