单项选择题

What is the main topic of the conversation

A．The conversion of volcanic waste to fertilizer.
B．The menace of currently dormant volcanoes around Mount Saint Helens.
C．The eruption of Mount Saint Helens and its effects on the environment.
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单项选择题
A．14,300.B．Approximately 103,000C．More than 43,000.
A．14,300.
B．Approximately 103,000
C．More than 43,000.
单项选择题
A．Study at a different school.B．Move to a warmer state.C．Get a travel agent’s licens
A．Study at a different school.
B．Move to a warmer state.
C．Get a travel agent’s licens
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