70. The ships’ generator broke down, and the pumps had to be operated ________ instead of mechanically. (A)) manually (B)) artificially (C)) automatically (D)) synthetically

30. It can be inferred from the passage that ________. (A)) killing foxes with poison is illegal (B)) limiting the fox population is unnecessary (C)) hunting foxes with dogs is considered cruel and violent (D)) fox-hunting often leads to confrontation between the poor and the rich