On every Monday morning, students would have school assembly in the hall and then afterwards they would go back to their ___classes.A respectable B respectful C respective D respected
A. reapectable
B. respectful
C. respective
D. respected
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The memo is to remind you that the meeting you set with Mr. Green has been ___to next Monday.A put away B put off C put down D put up
A. put away
B. put off
C. put down
D. put up
向量x与向量y的内积是一个实数。()
A. 对
B. 错
向量内积是一个非负数,即≥0。()
A. 对
B. 错