白癜风病因与黑色素细胞自身破坏有关。
参考答案:对
—Is Lili older than you?
—_____. [ ]
A. Yes, she is.
B. Yes, she does.
C. No, she is.
调配罂粟壳时不得单包,必须混入群药,防止变相套购。