单项选择题
A．searching for an accurate method of determining whether the universe is finite or infinite
B．discussing problems and possibilities involved in providing a definite picture of the shape of the universe
C．declaring opposition to the notion that spherical geometry is a possible model for the shape of the universe
D．criticizing discredited theories about the possible topologies of the universe
E．refuting the idea that there is no way to tell whether the universe is finite and if so what shape it has
单项选择题 Which of the following does the passage imply about the notion that the universe may be based on a spherical geometry（）
单项选择题 Which of the following best describes the relationship of the second paragraph to the first（）
单项选择题 The "ancient notion" (line 14) to which the author refers to is the idea that（）