What is the main idea of the passage?
A: It’s not possible to predict the future.
B: Black holes have changed the laws of physics.
C: Time travel may one day be possible.
D: We now know Einstein was right about everything.
A: It’s not possible to predict the future.
B: Black holes have changed the laws of physics.
C: Time travel may one day be possible.
D: We now know Einstein was right about everything.
举一反三
- According to the Uncertainty Principle,______ . A: it was theoretically possible to predict the future from Newton's laws B: it was not theoretically possible to know the present from Newton's laws C: there is no limit to the product of the uncertainty in a particle's position and the uncertainty in its momentum D: the more accurately one is able to define the position of a particle, the more certain he feels about its momentum
- It's self-evident that no one would have time to know everything going on in the world. A: there is B: as is C: it is D: what is
- The doctors have tried to save his life, but ______ failed. A: everything humanly possible B: humanly everything possible C: everything possible humanly D: humanly possible everything
- Television and radio ______ to know what is going on all overThe world. A: made it possible of us B: have made us possible C: have made it possible for us D: have made it be possible for
- It is impossible to predict what type of holiday people will be taking in 100 years’ time. It is possible, __________, that space travel will be a realistic option in the future. _________, it would completely transform our traditional view of holiday.