在鸡蛋清中滴入无色酚酞试液显红色，滴入紫色石蕊试液显蓝色，由此可知，鸡蛋清的pH值在pH标准比色卡的区域可能是（　　）

⑴What colour is her dress ?____              A、It's Mike's .

⑵What time is it now ?____                      B、It's white and black .

⑶Whose is this ?____                                C、They are apples .

⑷What are they ?____                              D、No , she isn't .

⑸Is your mother at home ?____               E、It's five o'clock .