单项选择题

What important discovery about seismic waves does the instructor mention

A．They occur at regular intervals.
B．They can withstand great heat.
C．They travel through the Earth's interior.
D．They can record the Earth's internal temperatur

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热门试题

单项选择题

What did the man think about the people of the Ice Age

A．They lived in caves.
B．They traveled in groups.
C．They had an advanced language.
D．They ate mostly fruit.

单项选择题

What does the man want the woman to do

A．Meet his anthropology teacher.
B．Lend him her magazine when she's clone with it.
C．Come over to his house after class.
D．Help him study for an anthropology test.