单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．It is smaller.
B．The classroom atmosphere is warmer.
C．Students can’t ask questions.
D．Students don’t need to stand up when the class begins.
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单项选择题
A．Fishing and hunting.B．He began to show great interest in natural beauty.C．Nuclear science.D．Amateur radio.
A．Fishing and hunting.
B．He began to show great interest in natural beauty.
C．Nuclear science.
D．Amateur radio.
单项选择题
A．1,530.000.B．930,000.C．600,000.D．105,800,000.
A．1,530.000.
B．930,000.
C．600,000.
D．105,800,000.
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