更多"How did scientists discover the sou"的相关试题:
[单项选择]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.
[单项选择]According to the passage, scientists have discovered that influenza viruses ______ .
A. cause ill health in wild birds
B. do not always cause symptoms in birds
C. are rarely present in wild birds
D. change when transferred from animals to man
[单项选择]How did the accident occur
[单项选择]How did the accident happen
[单项选择]How did Redmon find his job
A. By searching openings in a job database.
B. By posting a matching position in a database.
C. By using a special service of a database.
D. By E - mailing his resume to a database.
[单项选择]How did you go to Madrid
[单项选择]How did Maggie get to the Peak
A. By Peak Tram.
B. By cable.
C. On foot.
D. Not mentione
[单项选择]How did the couple remember their anniversary
[单项选择]How did Ward gain her position of authority
A. By bravery in battle.
B. By marriage to a chief.
C. By joining the confederacy.
D. By being born into a powerful family.
[单项选择]How did yellow ware achieve its distinctive color
A. By sponging on a glaze
B. By dusting on metallic powders
C. By brown-glazing
D. By firing at a high temperature
[单项选择]How did Daniel get Stephen out of danger
A. He squeezed into the car and carried him out.
B. He pulled him out through the broken window.
C. He freed him free his seatbelt before he got him out.
D. He held him over the water and swam back to shore.
[单项选择]How did Skip feel on his way home
[单项选择]How did American government deal with possible terror from international flights
A. The American authorities questioned the suspects among the passengers.
B. Some flights were cancelled and some international airlines are placed armed force.
C. Some pilots and passengers were arrested in Paris and Los Angeles.
D. All flights from abroad were cancelled on December 29th.
[单项选择]How did you （） with your classmates
A. make out
B. make up
C. make off
D. make up to
[单项选择]How did Dorothea Dix first realize the mistreatment of insane people
A. Her grandmother treated the mistreatment of insane people.
B. She worked in an insane hospital as a young woman.
C. She taught Sunday school in a prison.
D. She was asked to investigate the problem.
[单项选择]How did green advertisements change after the first wave
A. They became more popular.
B. They were more regulated.
C. They became better produced.
D. They became less honest.
[单项选择]How did researchers know that ancient Greeks rushed to watch the Olympics（）
A. Thousands of people came to watch.
B. The main stadium is still not big enough.
C. They have found the related record of events.
D. Many of them were visitors and pilgrims.
[单项选择]How did the author feel early in the morning
A. He felt burdened with responsibilities.
B. He felt puzzled by the dramatic situations.
C. He felt cheerful and happy.
D. He felt horrified by the war.
[单项选择]According to the passage, how did archaeologists learn to read the Sumerian language
A. By translating the work of the Subarians
B. By using their knowledge of spoken Semitic languages
C. By comparing Sumerian to other classical languages
D. By using their knowledge of Akkadian
