在20世纪中,持连续性发展观的发展心理学家居多。 ( )
参考答案:错
We did hold a meeting yesterday, but you (), so we did not inform you.
A.did not need attending
B.needn't have attended
C.did not need to attend
D.needn't attend
我国对水轮机转轮的标称直径是如何规定的?