单项选择题

From the example mentioned in Paragraph 2, what kind of the man is Hawking

A．He is an inflexible man.
B．He is a man who admits his mistakes bravely.
C．He is a man who always makes mistakes.
D．He is a man who is very humorous.

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热门试题

单项选择题

What is Hawking's chief contribution to science according to this passage

A．His quantum theory.
B．His blackhole theory.
C．His application of thermodynamics to blackholes.
D．His prediction that the universe would contract and time would reverse.

单项选择题

According to the passage, black holes ______.

A．include protons
B．oppose the quantum theory
C．stop anything from escaping
D．give off radiation