( )13.
( )14.
( )15.
C
( )14.
B
( )15.
B
答案：13. C；14. B；15. B
(
A. In 1789.
B. In 1781.
C. In 1791.
(
A. He learned English.
B. He worked with his father.
C. He studied engines.
(
A. He began to learn English.
B. He became his father's helper.
C. He wrote his own name for the first time.
(
A. For 8 hours.
B. For 12 hours.
C. For 13 hours.
(
A. The plane.
B. The car.
C. The train.
A
)16. When did George Stephenson start to work?A. In 1789.
B. In 1781.
C. In 1791.
(
C
)17. What did George Stephenson often do on holidays?A. He learned English.
B. He worked with his father.
C. He studied engines.
(
A
)18. What did George Stephenson do when he was seventeen?A. He began to learn English.
B. He became his father's helper.
C. He wrote his own name for the first time.
(
B
)19. How long did George Stephenson work every day?A. For 8 hours.
B. For 12 hours.
C. For 13 hours.
(
C
)20. What was the greatest invention that George Stephenson had invented?A. The plane.
B. The car.
C. The train.
答案：16.A 17.C 18.A 19.B 20.C
请看下面的情景提示：
你认为居里夫人是历史上最伟大的人,因为她两次获得诺贝尔奖,还推动了X射线在医院的应用｡
(1)
(2)
你认为居里夫人是历史上最伟大的人,因为她两次获得诺贝尔奖,还推动了X射线在医院的应用｡
(1)
Marie Curie.
(2)
Twice.
答案：(1)Marie Curie.
(2)Twice.