( )16. When did George Stephenson start to work?
A
( )17. What did George Stephenson often do on holidays?
C
( )18. What did George Stephenson do when he was seventeen?
A
( )19. How long did George Stephenson work every day?
B
( )20. What was the greatest invention that George Stephenson had invented?
C
答案：16.A 17.C 18.A 19.B 20.C
請(qǐng)看下面的情景提示:
你認(rèn)為居里夫人是歷史上最偉大的人,因?yàn)樗齼纱潍@得諾貝爾獎(jiǎng),還推動(dòng)了X射線在醫(yī)院的應(yīng)用。
(1)
Marie Curie.
(2)
Twice.
答案：.
(1)Marie Curie.(2)Twice.
