Beijing announced on Sunday that the date for events ____ the 40th anniversary of the normalization of China-Japan relations would be “adjusted to an appropriate time”.

A．marked

B．marking

C．having marked

D．to be marked

浆液的（）和粘度是决定浆纱上浆率和浆液对浆纱被覆与浸透程度的主要因素。