工业革命中，在动力的发明和利用上具有开创作用的人物是 [ ]
A、哈格里夫斯
B、瓦特
C、富尔顿
D、史蒂芬孙
答案：B
Who's this? [ ]
A. This is Li Ming's father.
B. He's a worker.
I shall never forget the day ______Shen Zhou V was launched , _______ has a great effect on my life .
A．when , which
B．that , which
C．which ,that
D．when , that
