Amy ___________ cook the meals, but she can sweep the floor.[ ]
A. can't
B. can
C. like
答案:A
交叉反应(cross reaction)
溃疡性结肠炎与肠易激综合征的共同症状有()
A.腹痛
B.黏液脓血便
C.里急后重
D.黏液稀便
E.腹泻