单项选择题

Why are more troops and police being deployed in Mexico

A．To fight a flood.
B．To fight drug gangs.
C． To take part in a military exercise.
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单项选择题
What's this news item mainly about
A．The world's youngest parent.
B．The world's oldest doctor.
C．The world's most premature baby.
单项选择题
What do chimps use to hunt, according to the new finding
A．Spears
B．Stones
C．Fire
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