下列四组中，都属于结缔组织的是 [ ]
A．血液、骨组织、肌腱、韧带
B．肌腱、鼻黏膜
C．胃腺、肠腺
D．软骨组织、皮脂腺
答案：A
消化性溃疡常指人体哪个部位的慢性溃疡（）
A.结肠
B.食管下段
C.胃肠吻合术后空肠上段
D.胃、十二指肠
E.盲肠
I think if is high time we ______ the fact that environmental pollution in this area is getting more serious than before.A. woke up to B. must wake up toC. wake up to D. are waking up to
