Although he practiced______ those English words a lot, he ______ the pronunciation.

A．read, finished

B．to read, memorized

C．reading, forgot

D．reading, improved

( )属于咨询时间限制的内涵。

A．确定的咨询时间，应不折不扣的执行
B．咨询时间应有所限定
C．不同求助者的咨询时间应完全一致
D．咨询时间应根据求助者的情况灵活掌握