There are __________ people in the Tiananmen Square.
A:five thousands
B:thousands of
C:five thousands of
把下列词语补充完整。
风____浪____ ____ ____飞瀑
____头____进 ____ ____罕至
电灯L1和L2并联接入电路,通过它们的电流分别为I1和I2,干路中的电流为I,则 ()