— I hear that John has gone to Japan for a visit. Do you know it? — He made no ________ of his journey before.
A:memory
B:mention
C:member
D:message
商鞅变法的措施中对后世有消极影响的是( )①重农抑商 ②“燔诗书而明法令” ③奖励军功 ④废除井田制 ⑤实行连坐法
我国水资源地区分布特点是____。