You should thank him for his ____. Without it, he couldn't make her laugh. [ ]

A. an advice

B. some advice

C. advices

D. many advices

图为所见宫腔内的T形节育器，放置时其上缘距宫底的距离是()

A．1cm

B．2cm

C．1.5cm

D．2.5cm

E．抵达宫底部