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