That music _____ interesting. [ ]
A. is sound
B. sounds
C. does sounds
D. is sounds
答案:B
蛔虫病的并发症除外()
A.肠穿孔
B.腹膜炎
C.肝硬化
D.肠梗阻
E.胆道感染
气煤、肥煤、焦煤、瘦煤的变质程度由高到低排列正确的是()
A.瘦煤>焦煤>肥煤>气煤
B.焦煤>肥煤>气煤>瘦煤
C.瘦煤>气煤>肥煤>焦煤
D.焦煤>瘦煤>气煤>肥煤