单项选择题

A．Helping the needy to survive.
B．Sharing risks of possible losses.
C．Being compulsory in most countries.
D．Covering differently according to different situations.
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单项选择题
A．To the top of the hill.B．To the gentle slope of the hill.C．To the foot of the hill.D．To the side of the hill.
A．To the top of the hill.
B．To the gentle slope of the hill.
C．To the foot of the hill.
D．To the side of the hill.
填空题
M
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