There _______ some sports news on TV tomorrow. [ ]
A has
B are
C will be
D will have
答案:C
食管癌的早期症状是()
A.吞咽困难
B.胸骨后疼痛
C.食物或黏液反流
D.进粗食时有暂时性胸骨后停留或异物感
E.消瘦
预制构件的混凝土强度等级不宜低于()。
A.C20
B.C25
C.C30
D.C35