[填空题]

Directions:
In the following text, some sentences have been removed. For questions 41-45, choose the most suitable one from the list A-G to fit into each of the numbered blank. There are two extra choices, which do not fit in any of the gaps. Mark your answers on ANSWER SHEET 1.
The U.S. space agency, NASA, is planning to launch a satellite that scientists hope will answer fundamental questions about the origin and destiny of our universe. (41) __________.
The prevailing theory of the universe’s origin, the "Big Bang" theory, says all matter and energy were once compressed into a tiny point. The density and resulting temperature were so enormous that, about 13-to-15-billion years ago by current estimates, a mighty explosion flung the matter hurtling outward in all directions. (42) __________.They also ask, is the expansion accelerating Will the universe collapse What is its shape Scientists will seek explanations with NASA’s ne

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