Recent findings lend strong support to the theory that a black hole lies at the center of the Milky Way and of many of the 100 billion other galaxies estimated to exist in the universe.
A. that a black hole lies at the center of the Milky Way and of
B. that a black hole lies at the Milky Way’s center and
C. that there is a black hole lying at the milky Way’s center and
D. of a black hole lying at the Milky Way’s center and
E. of a black hole that lies at the center of the Milky Way and of
阅读一个讲宇宙星系的形成理论。第一段讲有两种形状,dish like and eclipse shape, 然后有理论解释为什么; 第二段讲这个理论不对,至少half 不对 (这是出题点);第三段讲了计算机仿真模型,有两个出题点。