He was so efficient that he fulfilled the task __________ time.
A. above
B. ahead of
C. before
D. in advance
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When a guest greets a chambermaid “Hi” in the morning , she may answer---“_________”
A. Hi !
B. Hello !
C. How about you ?
D. Good morning.
After a day’s work , people feel like __________ a bath.
A. to take
B. take
C. taking
D. and take
下列哪一点不是被覆上皮的结构特点？
A. 细胞排列紧密，细胞外基质很少
B. 细胞呈现明显的极性
C. 含丰富的神经末梢
D. 含丰富的毛细血管
E. 上皮借基膜与深部结缔组织相连
被覆上皮的分类依据是
A. 上皮的来源
B. 上皮的功能
C. 上皮的分布
D. 上皮细胞的层数和形状
E. 细胞的形状
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