Question

【題目】

New research has found the longest living animal on Earth with a backbone is a shark.

The research, published in Science Magazine, found the Greenland shark is the longest living animal with a backbone in the world. The gray-colored sharks live in the cold water of the Arctic and are named after Greenland, the world's largest island. After examining one of these sharks, scientists decided it was born in the icy water about 400 years ago and died out recently.

An international team of biologists and physicists was able to estimate （估計(jì)）the ages of 28 dead female Greenland sharks by studying the lenses of their eyes. It is a new way to learn the age of an animal. Eight of the sharks were probably 200 years old or more, and could even have been 300 years old. That would make them older than some whales, which earlier were believed to have been the oldest animals at about 211 years old, according to the Associated Press.

This discovery also means that Greenland sharks can live more than three times longer than humans. Many people these days can expect to live into their eighties. African elephants average about 70 years. The oldest of the Greenland sharks the scientists studied was nearly 5 meters long. It was thought to have been 392 years old when it was caught four years ago. However, because the testing method is so new, it is not exact.

The study's lead expert is Julius Nielsen, a marine biologist from Denmark. He says the 392 number could have an error range （誤差范圍）of 120 years in either direction. That means the shark was probably born sometime between the years 1500 and 1740, with 1620 being the most likely.

"It's an estimate. It’s not a determination, “Nielsen said. "It is the best we can do."

Even at the lowest age, the shark would have been 272 years old when it died and still would be the longest-living animal with a backbone, Nielsen said.

“I don't know why they get so old, but I hope someone will find out, "Nielsen said.

【1】According to Science Magazine, the Greenland shark______.

A.is the longest living animal on earthB.seldom lives in the cold water of the Arctic

C.is an animal with a backboneD.still lives in the icy water now

【2】A new way to learn the age of a female animal is________ .

A.to estimate it by a biologistB.to examine its skin

C.to study the lenses of its eyesD.to discover the place of its birth

【3】The discovery means if people live into eighties, the shark might live into____years old.

A.almost 200B.less than 211C.over 320D.at least 450

【4】Which of the following statements is NOT true according to the passage?

A.The oldest of the Greenland sharks was nearly five meters long.

B.It can make sure that the oldest Greenland shark was 392 years old.

C.Julius Nielsen says the 392 number could have an error range of 120 years.

D.Julius Nielsen has tried to estimate the probable time the shark was born.

【5】The author will probably write about______ after the last paragraph.

A.the discovery of why sharks get so oldB.the living habits of the sharks

C.the reasons why sharks disappearedD.the bad side of the sharks

Answer 1

【答案】

【1】C

【2】C

【3】C

【4】B

【5】A

【解析】

本文是一篇說明文，介紹了研究發(fā)現(xiàn)地球上活得最久的有脊柱的動(dòng)物是格陵蘭島的一種鯊魚，并且介紹了其詳細(xì)內(nèi)容。

【1】細(xì)節(jié)理解題。根據(jù)The research, published in Science Magazine, found the Greenland shark is the longest living animal with a backbone in the world，可知格陵蘭島鯊魚是活得最久的有脊柱的動(dòng)物，故選C。

【2】細(xì)節(jié)理解題。根據(jù)An international team of biologists and physicists was able to estimate the ages of 28 dead female Greenland sharks by studying the lenses of their eyes，可知可以通過研究眼睛中的水晶體來預(yù)估雌性動(dòng)物的年齡，故選C。

【3】細(xì)節(jié)理解題。根據(jù)This discovery also means that Greenland sharks can live more than three times longer than humans，可知這種動(dòng)物壽命比人類長3倍，即是人類的4倍，故選C。

【4】判斷正誤題。根據(jù)It was thought to have been 392 years old when it was caught four years ago. However, because the testing method is so new, it is not exact，可知該數(shù)據(jù)是不確切的，所以B選項(xiàng)表述有誤，故選B。

【5】細(xì)節(jié)理解題。根據(jù)最后一句I don't know why they get so old, but I hope someone will find out，可知最后說不知道它們或那么長的原因，可以猜測(cè)下文要繼續(xù)講這個(gè)問題了，故選A。