It is______understood by all concerned that the word no one who visits him ever breathe a syllable of in his heating will remain forever unspoken.
【正确答案】
C
【答案解析】本句的意思是“相关方面默然达成一致意见：拜访过他的人没有跟他讲的话以后谁也不许说出去”。tacitly意为“沉默地，默然地”，如：Management has given its tacit approval to the plarr．(管理部门已暗中对该计划给予了支持。)其他三项uncommunicatively“不爱说话地”，acceptably“可以接受地”，taciturnly“(指人)沉默寡言地”都与句意不符。