单项选择题

A．To prevent disasters.
B．To mobilize urgent aids.
C．To predict earthquakes.
D．To explore vulnerable areas.
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单项选择题
A．She didn’t call to explain at all.B．She didn’t like to come for dinner.C．She didn’t have time to make the call.D．She hoped to come for dinner next time.
A．She didn’t call to explain at all.
B．She didn’t like to come for dinner.
C．She didn’t have time to make the call.
D．She hoped to come for dinner next time.
单项选择题
A．Open questions.B．Multiple choice questions.C．True or false questions.D．General questions.
A．Open questions.
B．Multiple choice questions.
C．True or false questions.
D．General questions.
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