【单选题】How should you look at an incorrect supposition?
A.
It tells you that you have failed and your hypothesis is useless.
B.
During the experiment stage the supposition should be constantly modified and revised.
C.
It means that the experiment has brought some new facts to light that maybe you hadn't thought about before.
【单选题】下列历史事件中,揭开中国全面抗战序幕的是()
【单选题】中国历史:下列历史事件中,揭开中国全面抗战序幕的是
【单选题】下列历史事件中,揭开中国全面抗战序幕的是()。