单项选择题
A．Awards vary in monetary value. B．Ceremonies are held on December 10 to commemorate Nobel’s inventions. C．Politics can play an important role in selecting the winners. D．A few individuals have won two awards.
A．350 million B．25,000 million C．4,000 million D．7,000 million
A．what makes people feel cool near a lake or an ocean in summer B．everything about the ocean C．why the ocean does not get more and more salty D．what happens to the salt in the ocean