A．Really？ But how？
B．How do you like it？
C．Wow， it"s really amazing!
D．Is it still used today？
E．Ah， it"s a great invention of ancient China．
F．It was invented in the Han Dynasty．
G．Guess! |
A：Look! This looks so interesting! There are dragons and frogs on it．
B．
(1) A．Really？ When was it invented？
B．
(2) A．What was it used for？
B．
(3) A．Was it used for holding water？
B．No，It was used fortesting earthquakes．
A．
(4) B．Read this， and you"ll know the way it worked．
A．
(5)