哪个不是巴普洛夫对高级神经系统的分型()
A.平衡型
B.弱型
C.躁动型
D.活泼型
E.安静型
参考答案:A
My father is very busy these days. He has to do .[ ]
A. many work
B. many works
C .a lot of work
D. a lot of works
渠系建筑物中,陡坡、跌水都是落差建筑物。()