A．findB．exposeC．uncoverD．discover[A] find [C] uncover[B……

单项选择题[A] waterways [C] channels[B] waterfronts [D] paths

单项选择题[A] exact [C] certain[B] definite [D] decisive

单项选择题[A] furnish [C] offer[B] afford [D] give

单项选择题[A] way [C] method[B] means [D] approach

单项选择题[A] focuses [C] depends[B] bases [D] takes