听第二篇短文,回答第16 — 20小题。
(
B
)16. When was Thomas Edison born?
A. In 1837. B. In 1847. C. In 1857.
(
A
)17. How often did Edison make a new invention?
A. About every fourteen days. B. About every seven days.
C. About once a month.
(
C
)18. Who taught Edison at home?
A. Himself. B. His teacher. C. His mother.
(
B
)19. Why are Edison's light bulbs (电灯泡) better than the old lamps (灯)?
A. Because they're much smaller. B. Because they're much safer.
C. Because they're more beautiful.
(
C
)20. What made Edison successful?
A. The value of being lucky. B. The drive to make money.
C. The spirit of never giving up.