问题
选择题
Three days later, word came _______ our country had sent up another man-made satellite.
A．which
B．when
C．that
D．where
答案
答案：C
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Three days later, word came _______ our country had sent up another man-made satellite.
A．which
B．when
C．that
D．where
答案：C
，电压表的示数将由U变为2U，则（ ）
