Which might be the most appropriate title of the passage？
At the Threshold of Neutrino Astronomy.
B. Neutrinos and the History of the Universe.
C. The Creation and the Study of Neutrinos.
D. The DUMAND System and How It Works.
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It is implied that pageants held in the evening has the advantage that
A. more audience can afford the time to watch the performance.
B. it doesn't cost much to design costumes for the performers.
C. the settings can be seen more clearly under artificial fighting.
D. distractions may be cut out by the surrounding darkness.
The author seems to compare the toll booths to
A. profit opportunities.
B. the market.
C. the investors.
D. profit.
One advantage that neutrinos have for studies in astronomy is that they
A. have been detected for 25 years.
B. possess a variable electric charge.
C. are usually extremely massive.
D. record information about their own origin.
World War II is particular in that it
A. anticipated the arrival of new age in war-waging.
B. victimized the ordinary people and soldiers alike on unprecedented scales.
C. made the aggressors suffer more than the aggressed.
D. used the propaganda to get the civilians into it without hesitation.
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