不属于细菌基本结构的成分是()
A.细胞壁
B.细胞膜
C.细胞质
D.细胞核
E.核质
参考答案:E
I wanted to buy a comic book like yours but there were ______ left at the bookshop.
A.no one
B.nothing
C.anyone
D.none
内痔手术后的常见反应有()
A.分泌物
B.疼痛
C.小便困难
D.出血