【单选题】Only when one loses ______its value.
【单选题】Vessels shall be deemed to be in sight of one another only when one ()from the other.
A.
Can be observed visually
B.
Can be observed by radar
C.
Can be located on the radar
【单选题】Only when one loses ______ its value.
【单选题】Only when one______the powerful current of the times will one's life shine brilliantly.
【判断题】《论语》是道家学派的经典著作之一。( )
【单选题】He felt her watching him.