When the clock __________ twelve o’clock, Cinderella suddenly remembered her godmother’s words and rushed away from the prince.

A．struck

B．beat

C．alarmed

D．settled

片剂平均片重为0.30g以下，重量差异限度为（）

A.15%

B.70%

C.±10%

D.±15%

E.±7.5%