四六级考试

【单选题】 The words "make" and "bus" are called ______ because they can occur unattached.
A．derivational morphemes
B．inflectional morphemes
C．bound morphemes
D．free morpheme

网考网参考答案：D
网考网解析：
[详细解答广make"和“bus”不用粘附在任何词素上也能表达独立的意义，所以它们是自由词素。故选 D。 查看试题解析出处>>