Children need to be able to distinguish the individual vowels and consonants sound.
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To teach pronunciation means to ask learners to repeat after the teacher sound by sound or word by word.
A. 对
B. 错
根据变量能够进行的数值运算的水平进行分类,海拔高度属于____________量表。
高水平的量表可以当成低水平的量表进行运算。
A. 对
B. 错
下列属于复合电极的是()
A. 玻璃电极
B. 气敏电极
C. 酶电极
D. 液膜电极
E. Na电极