单项选择题

Passage One
Questions 26 to 29 are based on the passage you have just heard.

A．Wars or natural disasters make them lose their families.
B．They want to help their families earn enough money to survive.
C．They are poor.
D．All the above.
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Why can astronomers age galaxies by computing how much the wavelength of their light has stretched
单项选择题
Considering chance opportunities, unlucky people don’t have because they ______.
A．have missed a lot of chances
B．are born with misfortune
C．have little abilities to deal with problems
D．have no chance actually
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