单项选择题

A．Whether or not snowflakes can be analyzed.
B．How snowflakes are formed.
C．What causes a snowstorm.
D．Where the largest snowflakes can be found.
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单项选择题
A．She was invited only for the weekend. B．The weather was too hot. C．She had an appointment. D．She had schoolwork to do.
A．She was invited only for the weekend.
B．The weather was too hot.
C．She had an appointment.
D．She had schoolwork to do.
单项选择题
A．She has done half of it already. B．She agrees that it is very long. C．They have all semester to do it. D．There’s nothing wrong with it.
A．She has done half of it already.
B．She agrees that it is very long.
C．They have all semester to do it.
D．There’s nothing wrong with it.
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