能描述计算机的运算速度的是( ).
A. 二进制位
B. 十六进制
C. MHz
D. MB
A _______ description takes a fixed instant as its point of observation.
Saussure’s _______ linguistics is the study of a language through the course of its history.
Saussure distinguished the linguistic competenceof the speaker and the actual phenomena or data of linguistics as _______ and _______.