So much of  interest ___ that most visitors simply run out of time before seeing it all.

A．offers Beijing

B．Beijing offers

C．does Beijing offer

D．Beijing does offer

患者，女，38岁。腰痛2年，腰痛痠软乏力，伴双下肢无力，不任久立，五心烦热，眠差梦多，头晕，耳鸣如蝉，咽干口燥，月经量多，常先期而至，舌红，苔薄，脉细数。证属

A．肾阴不足

B．肾阳不足

C．肾气不足

D．肾气阴两虚

E．肾阴阳两虚