The old man heard the（ ）of the lock and knew that the son’s family had left and he would be alone again.
A、click
B、client
C、cliche
D、climate
【正确答案】：A
【题目解析】：本题考查词义辨析。click：咔嗒声，点按，单击；client：委托人，当事人；cliche：陈词滥调，陈腐的套语；climate：气候，气候区。句意：老人听到了门锁的咔嗒声，知道儿子一家已经离开了，他又要独自一人了。故A选项符合题意。
