单项选择题

Questions 23 to 25 are based on the conversation you have just heard.

A．Greg’s mobile phone.
B．Greg’s home phone.
C．Greg’s office phone.
D．She doesn’t call him back.
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单项选择题
Which of the following statements is NOT true
A．Scientists have not discovered one single warning sign for all quakes.
B．Scientists have not yet discovered any sign that would tell the size of quakes.
C．Scientists claimed that they had found some methods of predicting earthquakes, but they didn’t work.
D．The methods scientists boasted of 20 years ago of predicting quakes didn’t produce desired results.
单项选择题
32
A．4,000-5,000.
B．50-60,000.
C．500-600.
D．5,000-6, 000.
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