What do people think of the suggestion of using nuclear weapons to alter the courses of asteroids?
A) It sounds practical but it may not solve the problem.
B) It may create more problems than it might solve.
C) It is a waste of money because a collision of asteroids with Earth is very unlikely.

D) Further research should be done before it is proved applicable.
出自:河南师范大学-小学教育(本科)-大学英语Ⅱ