下图的输入电阻为()。

It is suggested in the fourth paragraph that comprehensive sex educationA．does not put off sexual activity among the teens.B．helps the teens reduce the risk of becoming pregnant by 50%.C．helps 50% of the teens avoid the sexual behavior.D．helps the teens avoid becoming pregnant more effectively. 点击查看答案

The wounded soldiers’ blood _______ he ground red at the front.

A、died
B、dumped
C、drawed
D、dyed

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