Any list of the greatest thinkers in history contains the name of the brilliant physicist Albert Einstein. His theories of relativity led to entirely new ways of thinking about time, space, matter, energy, and gravity. Einstein’s work led to such scientific advances as the control of atomic energy, even television as a practical application of Einstein’s work. In 1902 Einstein became an examiner in the Swiss patent office at Bern. In 1905, at 26, he published four of his five major research papers. The first one provided a theory explaining Brownian movement, the zig-zag motion of microscopic particles in suspension (悬浮液). The second paper laid the foundation for the photon (光子), theory of light. In it he proposed that light is composed of separate packets of energy, called photons. A third paper contained the “special theory of relativity” which showed that time and motion are relative to the observer, if the speed of light is constant and the natural laws are the same everywhere in the universe. The fourth paper was a mathematical addition to the special theory of relativity. Here Einstein presented his famous formula, E=mc2, known as the energy mass equivalence (等价). In 1916, Einstein published his general theory of relativity in which he proposed that gravity is not a force, but a curve (曲线) in the space-time continuum (连续体), created by the presence of mass. Einstein spoke out frequently against nationalism, the rising of one nation above all others. He opposed war and violence and supported Zionism, the movement to establish a Jewish homeland in Palestine. When the Nazis came to power in 1933, they criticized his ideas. He then moved to the United States. In 1939 Einstein learned that two German chemists had split the uranium atom. Einstein wrote to President Franklin D. Roosevelt warning him that this scientific knowledge could lead to Germany developing an atomic bomb. He suggested the United States begin its own atomic bomb research. 28.Einstein left for the United States . A.because of political reasons B.because he loved the United States C.because of his sickness of Germany D.because he was employed by the United States 29.Television is mentioned in the text as . A.Einstein’s discovery B.a great invention of Einstein C.the purpose of Einstein’s work D.a successful use of Einstein’s work 30.According to the text, Einstein disagreed on . A.nationalism B.the defeat of the Nazis C.atomic bomb research in the United States D.the establishment of a Jewish homeland in Palestine 31.According to the text, Einstein is known as the following EXCEPT a . A.physicist B.politician C.peace lover D.thinker
答案:ADAB