[题目]-- you give me a hand? The box is too heavy. --- No problem.A. should B. Could C. May D. Must 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】--____________ you give me a hand? The box is too heavy. --- No problem.

A. should B. Could C. May D. Must

【答案】B

【解析】

试题分析：句意：-你能帮我一个忙吗？这个箱子太重了。-没问题。Should应该；Could能，常用来表示委婉语气而不表过去；May可以；Must必须。所以选B。

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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 （估计）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 （误差范围）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

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Opinions

Reasons

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have a better English environment

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improve the basic life skills

...

Disagree

spend lots of money

have dificulties in talking with foreigners

not know how to look after ourselves

...

Dear Editor

I've read Li Lin’s letter and in my opinion,

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Shen Hui

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The coast of the Pacific Ocean provides a special environment for the redwoods. Cool, wet air comes from the ocean and keeps the trees wet all year. That is important because most of the rain falls between October and May. During the dry summer months, the trees depend on the wet air over the coast.

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Redwoods have a couple of protection systems(系统). The skin of an adult redwood tree can grow to as thick as 12 inches. The thick covering protects the lower part of the tree from fire damage. Also, most of a redwood's branches and leaves are high up on the tree. This keeps them safe from forest fires. Redwoods are safe from insect damage because the wood has a bitter-tasting chemical.

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