用甲基橙指示剂所测得的酸度是指()的酸度。
A、强酸和强酸弱碱形成的盐类
B、强酸
C、弱酸和强酸弱碱形成的盐类
D、弱酸
参考答案:A
Each student _____ to make a poster. [ ]
A. have
B. has
C. had
D. to have
为安拉而爱、为安拉而恨的证据是什么?