Wang Qing did not come to the meeting; he ______ the notice on the blackboard since we saw it on our way to the dining-hall.

A．must not have missed

B．could not miss

C．could not have missed

D．wouldn't have missed

患儿，6岁，尿床3年，每日1次或多次，精神不振，食欲减退，舌淡苔白，脉细弱，宜选用哪组穴位（）.

A.关元、中极、三阴交、肾俞、膀胱俞

B.心俞、脾俞、肾俞、三阴交

C.太溪、曲骨、气海、八髂

D.次髎、夹脊、昆仑、曲泉

E.以上都不对