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更多“地下防水工程（underground waterproof …”相关的问题
第2题
Questions 3 to 4 are based on the conversation you have just heard.3.A.They lost contact w
Questions 3 to 4 are based on the conversation you have just heard.
3.
A.They lost contact with the emergency department.
B.They were trapped in an underground elevator.
C.They were injured by suddenly falling rocks.
D.They sent calls for help via a portable radio.
