下列哪种蛋白质为单纯蛋白质[ ]
A．肌红蛋白
B．细胞色素c
C．单加氧酶
D．血红蛋白
E．血清清蛋白
E
补全对话（在对话空白处填上一个词或短语，使对话完整）。
A: Li Ping 1_____ my friend. She's a little 2_____ outgoing than I.
B: My friend and I are the 3_____. We are 4_____ quiet.
A: Do you 5_____ the same?
B: 6_____, I'm a little taller 7_____ her.
A: What 8_____Lucy's friend?
B: Lucy's friend is 9_____ from her 10_____ much more athletic than her.
清洗空调取出滤网后，用清水冲洗滤网（），灰尘就会自动脱落。
end is 9_____ from her 10_____ much more athletic than her.