单项选择题

Which of the following titles best describes the passage as a whole

A．The Vacuum: Its Fluctuations and Decay.
B．The Vacuum: Its Creation and Instability.
C．The Vacuum: A state of Absence.
D．Particles That materialize in the Vacuum.
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单项选择题
It can be inferred from the passage that scientists are currently making efforts to observe which of the following events
A．The decay of a vacuum in the presence of virtual particles.
B．The decay of a vacuum next to a super heavy atomic nucleus.
C．The creation of a superheavy atomic nucleus next to an intense electric field.
D．The creation of a virtual electron and a virtual positron as a result of fluctuations of a vacuum.
单项选择题
From the sentence Like Proust, the French author whose experiences became his literary capital, man can recapture the past. you can tell that Proust
A．wrote primarily to improve his future life.
B．discovered thing about his future life.
C．described man's development of time sense.
D．wrote about past experiences.
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