Q15: 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 - that a black hole lies at the Milky Way’s center and
- that there is a black hole lying at the Milky Way’s center and
- of a black hole lying at the Milky Way’s center and
- of a black hole that lies at the center of the Milky Way and of
答案是a求解 |