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　　When a Swedish ship that sank in 1628 was recovered from the port of Stockholm, historians and scientists were overjoyed with the chance to examine the remains of the past．The ship construction showed how ships were built and operated during the seventeenth century．In this way, artifacts, objects made by human beings, provided a picture of daily life almost 400 years ago．

　　Underwater archaeology－the study of ships, aircraft and human settlements that have sunk under large bodies of water－is really a product of the last 50 years．The rapid growth of this new area of study has occurred because of the invention? of better diving equipment．Besides the Swedish ship wreck(殘骸), underwater? archaeologists have made more exciting discoveries such as the 5000-year-old boats in the Mediterranean Sea．

　　Underwater archaeology can provide facts about the past．In ancient ports all over the world are ships sunken in the past 6000 years．There are also sunken settlements in seas and lakes telling of people’s way of life and their systems of trade in ancient times．Underwater archaeologists want to study these objects to add to the world’s knowledge of history, but they have to fight two enemies．One enemy is treasure hunters who dive for ancient artifacts that they can sell to collectors．Once sold, these objects are lost to experts．The second enemy is dredging machines(挖掘機(jī))often used to repair ports．These machines destroy wrecks and artifacts or bury them deeper under sand and mud．By teaching the public about the importance of underwater“museums”of the past, archaeologists are hoping to get support for laws to protect underwater treasures．

(1)

What purpose does Paragraph 1 serve in the passage?

[　　]

A．

To provide background information of the topic．

B．

To attract readers’ attention to the topic．

C．

To use an example to support the topic．

D．

To offer basic knowledge of the topic．

(2)

The aim of underwater archaeology is to ________．

[　　]

A．

exploit water bodies

B．

search underwater life

C．

study underwater artifacts

D．

examine underwater environment

(3)

Underwater archaeologists are worried because ________．

[　　]

A．

sea hunters have better diving equipment

B．

their knowledge of world history is limited

C．

dredging machines cause damage to the ports

D．

sold artifacts can hardly be regained for research

(4)

What is the main purpose of the passage?

[　　]

A．

To introduce a young branch of learning．

B．

To discuss the scientists’ problems．

C．

To explain people’s way of life in the past．

D．

To describe the sunken ships．

答案：1．B;2．C;3．D;4．A;
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科目：高中英語 來源：設(shè)計(jì)必修一英語北師版 北師版 題型：050

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How Long Can People Live?

　　She took up skating at age 85, made her first movie appearance at age 114, and held a concert in the neighborhood on her 121st birthday．

　　Whe n it comes to long life, Jeanne Calment is the world’s recordholder．She lived to the ripe old age of 122．So is 122 the upper limit to the human life span(壽命)?If scientists come up with some sort of pill or diet that would slow aging, could we possibly make it to 150－or beyond?

　　Researchers don’t entirely agree on the answers．“Calment lived to 122, so it wouldn’t surprise me if someone alive today reaches 130 or 135,”says Jerry Shay at the University of Texas．

　　Steve Austad at the University of Texas agrees．“People can live much longer than we think,”he says．“Experts used to say that humans couldn’t live past 110．When Calment blew past that age, they raised the number to 120．So why can’t we go higher?”

　　The trouble with guessing how old people can live to be is that it’s all just guessing．“Anyone can make up a number,”says Rich Miller at the University of Michigan．“Usually the scientist who picks the highest number gets his name in Time magazine．”

　　Won’t new anti-aging techniques keep us alive for centuries?Any cure, says Miller, for aging would probably keep most of us kicking until about 120．Researchers are working on treatments that lengthen the life span of mice by 50 percent at most．So, if the average human life span is about 80 years, says Miller,“adding another 50 percent would get you to 120．”

　　So what can we conclude from this little disagreement among the researchers?That life span is flexible(有彈性的)，but there is a limit, says George Martin of the University of Washington．“We can get flies to live 50 percent longer,”he says．“But a fly’s never going to live 150 years．”

　　“Of course, if you became a new species(物種)，one that ages at a slower speed, that would be a different story,”he adds．

　　Does Martin really believe that humans could evolve(進(jìn)化)their way to longer life?“It’s pretty cool to think about it,”he says with a smile．

(1)

What does the story of Jeanne Calment prove to us?

[　　]

A．

People can live to 122．

B．

Old people are creative．

C．

Women are sporty at 85．

D．

Women live longer than men．

(2)

According to Steve Austad at the University of Texas, ________．

[　　]

A．

the average human life span could be 110

B．

scientists cannot find ways to slow aging

C．

few people can expect to live to over 150

D．

researchers are not sure how long people can live

(3)

Who would agree that a scientist will become famous if he makes the wildest guess at longevity?

[　　]

A．

Jerry Shay．

B．

Steve Austad

C．

Rich Miller

D．

George Martin

(4)

What can we infer from the last three paragraphs?

[　　]

A．

Most of us could be good at sports even at 120．

B．

The average human life span cannot be doubled．

C．

Scientists believe mice are aging at a slower speed than before．

D．

New techniques could be used to change flies into a new species．

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