在正常状态下,粪便储存在:()
A.横结肠
B.降结肠
C.乙状结肠
D.直肠
E.以上均可
参考答案:C
We're happy that our country has developed _____ these years than before.[ ]
A. quickly
B. less quickly
C. more quickly
D. most quickly
跟家族遗传性疾病有关的结石是()
A.草酸盐结石
B.碳酸盐结石
C.尿酸结石
D.胱氨酸结石
E.磷酸盐结石