控制生物遗传性状的基因,位于细胞的哪一种结构上[ ]
A.细胞壁
B.细胞膜
C.染色体
D.叶绿体
答案:C
All the fruit is free. You can eat_____[ ]
A. as many as possible
B. as much as possible
C. as many as possibly
D. as much as possibly
可引起Horner综合征的疾病有:()
A.神经鞘膜瘤
B.颈动脉体瘤
C.颈动脉瘤
D.颈动脉静脉瘘
E.甲状舌管囊肿