单项选择题

A．that
B．when
C．if
D．but
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单项选择题
A．experimentsB．researchesC．factsD．studies
A．experiments
B．researches
C．facts
D．studies
单项选择题
A．It will be sunny.B．It will be very cold.C．It will be windy.D．It will be rainy.
A．It will be sunny.
B．It will be very cold.
C．It will be windy.
D．It will be rainy.
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