模架包括上模板、下模版、导柱、导套和流道。
参考答案:错
该患者初步考虑可能为
A.食管癌
B.食管静脉曲张
C.食管炎
D.食管中段牵引型憩室
E.贲门失弛缓症
The environment in our town is getting worse and worse, so many trees _______. [ ]
A. are planting
B. should be planted
C. should plant
D. will plant