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    10．At the rally ,Clinton tried to show to voters that . A．she once listened to King’s speech B．she was for the equality among different races C．the “dream has already been fulfilled D．she was the one who could fulfill King’s “dream B How would you like to sleep with one half your brain asleep and the other half awake? Dolphins sleep this way. Recently , scientists at Indiana State University have discovered that ducks sleep this way too. They found that ducks sleep half awake so they can rest and watch for danger at the same time. After putting their ducks in a row and videotaping them, some researchers found ducks on the end of each row spent more time asleep with one eye open ,apparently looking for predators. “The more the ducks felt threatened ,the more they slept with one eye open, said lead author Niels C. Rattenborg ,a graduate student at Indiana State University ,Terre Haute . the unique aspect is not that they do it ,but that they control it . When they sleep at the edge of a group ,they tend to realize greater danger ,so they spend more time sleeping with one half of their brain. Ducks with one eye open were still awake enough to detect predators ,said the authors of the study ,which appears today in the journal Nature. The researchers studied four groups of four ducks held in plastic boxes ,which were arranged in a row .Ducks on the end were found to sleep with one eye open 31.8 per cent of the time, compared to 12.4 percent of the time for ducks in the central position. Also ,ducks in the central position did not open one eye more than the others, while ducks on each end kept the eye facing away from the group open 86.2 per cent of the time. Brain wave readings of the ducks showed that the half of the brain receiving signals from the closed eye indicated that half of the brain was sleeping. Signals from the half of the brain receiving signals from the open eye showed a state between fully awake and asleep. 【查看更多】

     

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           WASHINGTON ,Jan. 21—“I want to be a builder. I want to build houses and buildings for the homeless,” said Aman Efrem ,a third-grade student from Hearst Elementary in Washington. D.C. For another student, Azalea Westray ,the dream is “that all people stop violence” and “all people love and respect one another.”

           The two were among various answers to the Washington Post’s blank filling to “My dream is…” when Americans observed the Martin Luther King’s Day Monday.

           From Atlanta to Chicago ,memorial services ,forums and rallies are held nationwide Monday to honor the advocate of peaceful resistance and equality for people of all races .

           The Wall Street in New York ,in particular ,kicked off the celebration of the Martin Luther King’s DAY on Friday in an unusual way with the leader of American’s most important civil rights group ,also chairman of the Congress of Racial Equality Roy Innis ringing the opening bell in the morning at the Nasdaq stock exchange.

           Memory of Martin Luther King’s unfulfilled dream adds fuel to the speculation（推测）on the first African American presidential hopeful ,Illinois Senator Barack Obama ,as the 2008 presidential primary will move to South Carolina on Jan. 26, which homes a large black population.

           Obama and two other Democratic presidential candidates ,New York Senator Hillary Rodham Clinton and former North Caroline John Edwards ,Monday turned the memorial events into their campaign stages to persuade the black who accounts for a significant percentage of the total Democratic voters in the state.

           At the rally ,Obama echoed Martin Luther King’s “dream” and called for the end of divisions that he said has damaged the presidential contest. And Clinton, on the other hand, recalled listening to King’s speech in her childhood and reminded voters of his vision of racial equality. “The dream is nowhere fulfilled ,” she said. “Now we are called to rise up ,speak up and finally get it done.”

    66．This passage mainly tells us that       .

           A．the dream of Martin Luther King Jr. has not been fulfilled until now

           B．Martin Luther King’s Day was celebrated in the U. S. on Monday

           C．everybody has his own dream ,including school children

           D．U.S presidential candidates seek support from the blacks

    67．The two students mentioned in the first paragraph       .

           A．expressed their wishes in reply to an American newspaper

           B．were black children who suffered poverty and violence

           C．were asked to make a speech entitled “I have a dream”

           D．were determined to fulfill the dream of Martin Luther King Jr.

    68．The Wall Street in New York       .

           A．refused to celebrate the Martin Luther King’s Day

           B．observed the Martin Luther King’s Day on Friday instead of on Monday

           C．started the celebration of the Martin Luther King’s Day in an unusual way

           D．invited Barack Obama to ring the opening bell at the stock exchange

    69．It can be learned from the passage that South Carolina is the hometown of        .

           A．Martin Luther King                              B．Barack Obama

           C．many black people                               D．the U.S. president

    70．At the rally ,Clinton tried to show to voters that       .

           A．she once listened to King’s speech

           B．she was for the equality among different races

           C．the “dream” has already been fulfilled

           D．she was the one who could fulfill King’s “dream”

      

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