单项选择题
[听力原文] M: What happened to you You are so late. W: Oh, I am ,so sorry. I got up at seven o’clock.
A．Her car broke down halfway. B．Her car was hit by others. C．She got up late. D．She met a good frien
A．nobody was interested B．there were no scientific instrument and equipments needed C．Einstein did not have his own laboratory D．it was no use testing them