24. We can conclude from the passage that ______________.
A) while pushing asteroids off course nuclear weapons would destroy the world
B) asteroids racing across the night sky are likely to hit Earth in the near future
C) the worry about asteroids can be left to future generations since it is unlikely to happen in our lifetime
D) workable solutions still have to be found to prevent a collision of asteroids with Earth
25. Which of the following best describes the authors tone in this passage?
A) Optimistic.
B) Critical.
C) Objective.
D) Arbitrary.
Passage Two
Questions 26 to 30 are based on the following passage:
Believe it or not, optical illusion can cut highway crashes.
Japan is a case in point. It has reduced automobile crashes on some roads by nearly 75 percent using a simple optical illusion. Bent stripes, called chevrons , painted on the roads make drivers think that they are driving faster than they really are, and thus drivers slow down.
Now the American Automobile Association Foundation for Traffic Safety in Washington D.C. is planning to repeat Japans success. Starting next year, the foundation will paint chevrons and other patterns of stripes on selected roads around the country to test how well the patterns reduce highway crashes.
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