Question

terry

請問23題為何是A呢？謝謝

estac
C20. A) for
B) above
C) on
a vital role in controlling
Traffic lights are almost everywhere. Without doubt, they have _21_
traffic. The history of traffic can 22 to 1868. At first, it was simply a rotating gas lamp, ___23_
outside the London Parliament to control pedestrians and horses. Later, traffic management became
even more complex with the invention of cars. The first electric traffic light appeared in 1912, which
was followed by other designs. It is interesting to see some traffic lights not only switch colors,
_____24___ display numbers to show how much time is left before the next switch. Some engineers in
Taipei have even _25__ the idea if putting green and red figures on the traffic lights to amuse
pedestrians.
DC 21. A) created
C) made
D) played
A22. A) be traced back
AB23. A) installed
B) acted
B) be dated back
B) installing
D) be brought back
C) be pulled back
C) to install
D) be installed
B) but also
B24. A) together with
C25. A) found fault with
C) instead of
D) as well as
B) made room for
C) come up with
D) run out of
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Answer 1

✨ ベストアンサー ✨

fishhhh._.

install是安裝的意思 a rotating gas lamp是“被”安裝 所以是installed

terry

謝謝🙏