The highest flood referred to in the passage was about ________.
[A] 18 feet high
[B] 5-22 feet high
[C] nearly 50 feet high
[D] 52 feet high
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56 A close B with C for D next
The Sydney Harbor oil spill was the result of a__________
A. deliberate act of sabotage
B. ship refueling in the harbor
C. tanker pumping oil into the sea
D. collision between two oil tankers
33 What kind of institution did the lead researcher work for？
A A medical association.
B A primary school.
C A hospital.
D A charity.
A. use B. devote C. spend D. take
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