【华慧考博】考博英语每日一练(5.24)考博加油!
1. Hardly _______ the train_______ when the waiting crowd ran towards it.
A. did, arrive
B. has, arrived
C. had, arrived
D. was, arriving
2. A network of miniature toxin detectors has been ______ in 30 American cities for the sake of bio-security.
A. deployed
B. committed
C. indulged
D. immersed
【考博英语句子改错】
Brooklyn, New York, had a population of about 23,000 when it becomes a city in 1834.