So quickly ____________ that what is a possibility today may be a reality tomorrow. [ ]

A. is science advancing        

B. science is advancing

C. will science advance        

D. science will advance

上课时遇到幼儿尿裤子这种情况，幼儿教师采取以下哪种做法最为恰当？（）

A.一边组织教学一边给孩子换裤子

B.责备孩子该上厕所时不去上

C.把孩子领到寝室或卫生间帮他换好裤子并叮嘱他以后想尿尿要告诉老师

D.如果天气比较热就让其自然干