单项选择题

Scientists learned about the barred owl migration by ()

A. decoding spotted owl sounds
B. feeding mice to the owls
C. monitoring spotted owl populations
D. researching the Internet

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热门试题

单项选择题

Why do large numbers of people come to Pompeii each year ()

A. To visit the volcano.
B. To shop and eat there.
C. To watch sports and plays.
D. To see how Pompeiians lived.

单项选择题

What is the most important reason that Sequoyah will be remembered()

A. California redwoods were named in his honor.
B. He was illiterate.
C. He created a unique alphabet.
D. He recovered from his madness and helped mankind.