判断题

决定城市乘客出行需求的核心是与研究对象相关的社会经济需求量。

答案：正确

你可能感兴趣的试题

Edison was given the credit for inventing the electric light because he exported his light bulbs around the world.

答案：不正确。

单项选择题

Stephen Hawking has stated that … Read this extract to find the correct answer. World-renowned astrophysicist Stephen Hawking believes that once spaceships can exceed the speed of light, humans could feasibly travel millions of years into the future in order to repopulate earth in the event of a forthcoming apocalypse. This is because as the spaceships accelerate into the future, time would slow down around them (Hawking concedes that bygone eras are off limits – this would violate the fundamental rule that cause comes before effect).
A、Human time travel is theoretically possible, but is unlikely to ever actually occur.
B、Human time travel might be possible, but only moving backward in time.
C、Human time travel might be possible, but only moving forward in time.
D、All time travel is impossible.