尽管在苹果馅饼中存在苹果籽，但它不会导致出现食品安全问题。
参考答案：对
325 million books have been sold and Harry Potter has become a global ______. [ ]
A. appearance
B. condition
C. situation
D. phenomenon
物理信道PDSCH映射为传输信道为（）
A.BCH，
B.MCH，
C.PCH，
D.DL-SCH
