5、What is the colour of the universe? Astronomers had not answered this question unti1 two months ago．That is when two American astronomers reported on their study of all the light in the universe．They said that the universe would appear to the human eyes to be a light greenish colour．

  Karl Glazebrook and Ivan Baldry of Johns t2Iopkins University in Baltimore，Maryland，reported their finding in January．They presented the research at a meeting of the American Astronomical Society．They said that finding the colour of the universe was not part of their more serious scientific research．They did it for fun．

    However，earlier this month，the scientists admitted making a mistake．They said their finding was much more colourful than it should have been．They now say the light from our universe is closer to white．It is more 1ike 8 milky or creamy white colour．

    Their study attempted to show what people might see if they could observe t he universe from far away．The scientists found the average colour by combining light from about two— hundred—thousand star systems．Their information came from an observatory in New South Wales, Australia．They said it was a very pretty light green．Many newspapers and television stations reported their finding．

    Other scientists and colour engineers attempted to reproduce the result．Mark Fairchild of the Rochester Institute discovered a mistake in the computer software program used by the Johns Hopkins scientist s．

    When the mistake was corrected，the results changed．The new colour of the universe is much less colourful．It is very close to white．

1．The color of the universe is   

    A．1ight greenish         B．black                   C．blue                       D．close to white

2．The two scientists found the color of the universe by          ．

    A．combining light from about 200，000 star systems

    B．observing at an observatory in India

    C．making long—term scientific research

    D．using computer software programs

3．Who found the mistake in the Johns Hopkins scientists’ finding?

    A．Karl Glazebrook．                                   B．Ivan Baldry．

    C．Johns Hopkins．                                        D．Mark Fairchild．

4．This passage mainly tells us         ．

       A．what the colour of the universe is

    B．the light from our universe is a light greenish colour

    C．the new colour of the universe is much more colourful

    D．t he finding of t he colour of the universe is difficult