Which of the following words is semantically motivated?（ ）
A、Airmail
B、Hiss
C、Mouth in the phrase “the mouth of a river ”
D、Laconic in the phrase“ a laconic answer ”
【正确答案】：C
【题目解析】：语义理据是指由词的概念意义所暗示的联想意义。这种理据解释词的字面意义与比喻义之间的联系。在说the mouth of a river时，我们是把河口与人或动物的口联系起来
