关于我国经济发展的叙述,错误的是(    )

关于x的一元二次方程ax²+bx+ $\frac{1}{4}$ =0有两个相等的实数根，写一组满足条件的实数a，b的值，a=____，b=____．

 漫画《两只小花狗》，回答下列问题：

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    People call the Winter Olympics the White Olympics. At this time, they publish(发行) many stamps to mark(标志) the great games. The first stamps came out on January 25th, 1932 in the United States for the 3rd White Olympics. From then on, publishing stamps during the White Olympics became a rule.

    During the 4th Winter Olympics, people published a group of stamps in November 1936. They drew five rings of Olympics. It was the first time that the rings appeared(出现) on the stamps of the White Olympics.

    In the 1950s，the stamps of this kind became more colorful. When the White Olympics came, the host countries as well as non-host countries published stamps to mark those games. China also published four stamps in February 1980 when the Chinese sportsmen began to take part in the White Olympics.

    In Asia, Japan was the only country to hold the White Olympics. They sold 14,500 million stamps during the Olympics.

    People drew different kinds of sports on these small stamps, and they enjoyed the wonderful sports and some famous players.