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提问人:网友xykweb 发布时间:2022-01-07
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How did scientists discover the source of lead pollution in Greenland?A.By analyzing the d

How did scientists discover the source of lead pollution in Greenland?

A.By analyzing the data published in journals like Nature and Ambio.

B.By observing the lead accumulations in different parts of the arctic area.

C.By studying the chemical dements of soil and snow in Northeastern America.

D.By comparing the chemical compositions of leaded gasoline used in various countries.

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更多“How did scientists discover the source of lead pollution in Greenland?A.By analyzing the d”相关的问题
第1题
Fortunately, the driver and the passengers ________ the car accident with little injury.

[    ]

A. lived

B. existed

C. saved

D. survived

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第2题
阅读理解。????In seventh grade, Brittany Blythe dre...
阅读理解。
In seventh grade, Brittany Blythe dreamed of being a cheerleader. Her school's coaches were less

than enthusiastic. "They said, 'I don't know how you'll be able to do it,' she recalls. "'You won't be able

to do it. '"

But Brittany, now a junior at Strath Haven High School near Philadelphia, persisted(坚持). And when

the junior team cheerleaders won a tournament last year, she was right there, dancing and cheering with

the rest of the team.

Not bad for someone whose legs were cut off below the knee when she was two years old.

Brittany, 18, was born without shinbones(胫骨)-"just blood and muscle tissue", as she puts it. When she

tried to walk, her legs twisted.

After the operation, she adapted quickly. "From day one, I basically jumped up and wanted to do

everything," she says. Prosthetic legs(假腿) allowed her to move around upright, but too slowly to keep

up with her friends. Brittany's solution: take the legs off and walk on her knees-sometimes she still does

when safety and comfort permit.

She's rarelydaunted. Other children laughed at her through the years, especially in junior high school,

but she says the challenge only made her stronger. Now she's trying to convince her coaches to let her

remove the prostheses and be a flyer, the cheerleader who's thrown in the air and caught by her

teammates.

Brittany doesn't think her problems are more difficult than the next person's. "My disability was the

first thing I had to get through, and that's going to prepare me for the future," she says. "It's all just a test:

If someone throws you a curve ball(给你出难题), what are you going to do?"

1. What was the school's coaches' attitude towards Brittany's idea of being a cheerleader?
A. Supportive

B. Doubtful

C. Opposed

D. Curious

2. What did Brittany do to keep up with her friends?
A. She used a pair of walking sticks.

B. She practiced hard every day.

C. She walked on her knees.

D. She asked her friends for help

3. The underlined word "daunted" in Paragraph 6 probably means _________.
A. discouraged

B. angry

C. confident

D. fortunate

4. We can learn from the last paragraph that Brittany __________.
A. is not well prepared for the future

B. takes a positive attitude towards life

C. likes the challenge of learning new things

D. thinks that her problems are more difficult than other's.

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第3题
翻译: Thus, if the terminal voltage of the source could be measured in a way that would cause no current to flow, it would be found to be more than the voltage measured when a current flows by the amount of the IR drop in the source.
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第4题
The VDAPteam members are collecting data and analyzing the geology surrounding thevolcano to the history of eruptions in theregion.
A.compose

B.impact

C.confront

D.unravel

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第5题
The emphasis in the communicative games is on the successful communication rather than the _____ of language.

A、correctness

B、development

C、usefulness

D、expression

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第6题
Questions 26 to 30 are based on the following passage:

According to the dictionary definition of “create”, ordinary people are creative every day. To create means “to bring into being, to cause to exist”—something each of us does daily.

We are creative whenever we look at or think about something in a new way. First this involves an awareness of our surroundings. It means using all of our sese to become aware of our world. This may be as simple as being aware of color and texture, as well as taste, when we plan a meal. Above all, it is the ability to notice things that others might miss.

A second part of creativity is an ability to see relationships among things. I f we believe the expression, “There is nothing new under the sun,” the creativ ity is remaking or recombining the old in new ways. For example, we might do this by finding a more effective way to study or a better way to arrange our furniture, or we might make a new combination of camera lenses and filters to cr eate an unusual photograph.

A third part of creativity is the courage and drive to make use of our new ide as, to apply them to achieve some new results. To think up a new concept is one thing; to put the idea to work is another.

These three parts of creativity are involved in all the great works of genius, but they are also involved in many of our day to day activities.

26.Which of the following activities is NOT a creative one according to t he passage?

A.To prepare a meal.

B.To arrange the furniture in a peculiar way.

C.To buy some books from a bookstore.

D.To “write” a letter with the computer.

27.The author holds that ____.

A.creativity is of highly demand

B.creativity is connected with a deep insight to some extent

C.creativity is to create something new and concrete

D.to practise and practise is the only way to cultivate one’s creativity

28.“There is nothing new under the sun.” (Par.3) really implies that ____.

A.we can seldom create new things

B.a new thing is only a tale

C.a new thing can only be created at the basis of original things

D.we can scarcely see really new things in the world

29.What does the author think about the relationship between a new though t and its being put into practice?

A.It’s more difficult to create a new thought than to apply it in practice.

B.To find a new thought will definitely lead to the production of a new thing.

C.One may come up with a new thought, but can not put it into practice.

D.A man with an excellent ability of practice can easily become an inventor.

30.The best title for this passage is ____.

A.How to Cultivate One’s Creativity    B.What is Creativity

C.The Importance of Creativity    D.Creativity—a Not Farway Thing

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第7题
14. Forceful and persuasive, compact and precise, _________ reveals to us Bacon's mature attitude towards learning.

A、A. Of Studies

B、B. Of Self-help

C、C. Of Nature

D、D. Of Self Reliance

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第8题
The thief escaped from prison and passed the days ________ discovery.

[     ]

A. in favour of

B. in fear of

C. on account of

D. at the mercy of

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第9题
Credit must be given to the sources to avoid __________

A、copyright violation.

B、repetitive researches.

C、plagiarism.

D、invalid experiment.

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第10题
What are the specific traits 【C1】______ will assist executives to climb the ladder of success? Opinions vary widely. Given approximately equal qualifications and circumstances, some claim the success factor is largely a matter of luck—being in the right place 【C2】______ the fight time. Others speak of an almost crazy devotion to work, combined 【C3】______ a degree of ruthlessness. One "expert" maintains that it's undoubtedly a matter of how much education your mother had.

To make it big, executives must possess four basic skills:

First, drive Business success takes an unusual amount of energy. A successful executive—almost 【C4】______ definition—is a striver. 【C5】______ will get tense when he is not striving.

Second, people sense Some say being able to judge people is more important 【C6】______ a high IQ, The skill can be instinctual, 【C7】______ in most cases it is painstakingly learned.

Third, communications ability. Different executives make themselves understood in different ways. Some transmit ideas best face to face; others are masters of the telephone call; still others are persuasive writers. One way 【C8】______ another, they all communicate clearly.

Fourth, calm 【C9】______ pressure No businessman will get very far 【C10】______ he chokes up.

【C1】______

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