问题
单项选择题
We had to learn chemical()at school but I can only remember H2O for water.
A.principles
B.prescriptions
C.formula
D.formulae
答案
参考答案:D
We had to learn chemical()at school but I can only remember H2O for water.
A.principles
B.prescriptions
C.formula
D.formulae
参考答案:D