消费者市场细分的标准是包括什么？

Arctic fox(北极狐) is a kind of small fox that lives in the Arctic. It grows about 50 centimeters long, not including its tail, 30 centimeters tall and weighs from 3 to 7 kilos.

The Arctic foxes are white or blue in color. The white ones are white in winter, but grey-brown in summer. The blue ones are blue-grey all year round. The Arctic foxes have long, thick hair that is called fur. And the long fur covers their whole bodies, including both their cat eyes and rabbit feet, to keep them warm in the low temperature in the Arctic.

The Arctic foxes feed mainly on birds, birds’ eggs and other small animals. Teamwork is the way they look for food, and they don’t like to do that alone.

Baby Arctic foxes are very lovely. They don’t open their eyes until a week after their birth. For the first half of the year, their parents offer them food. They begin to look for food on their own when they are about six months old. The next year they can live alone.

Today, the number of the Arctic foxes is becoming smaller and smaller, because people kill them for their fur to make beautiful coats for money. Something must be done to protect the Arctic foxes.

小题1:Not all the Arctic foxes change their colors in different seasons.

小题2: The Arctic foxes have rabbit eyes and cat feet.

小题3: Baby Arctic foxes are born with their eyes open.

小题4: Birds, birds’ eggs and other small animals are the main food for the Arctic foxes.

小题5: According to the passage, there are more Arctic foxes now.

1岁患儿，发热6天，体温39℃左右，伴咳嗽。发病第2天起用青霉素治疗2天，仍发热，咳嗽频繁，继续用青霉素并加用头孢曲松，症状加重。查体：精神萎靡，呼吸困难，面色发灰，呼吸40次／分，鼻翼扇动，气管居中，心率130次／分，律齐，心音稍钝。右肺叩诊浊，左肺细湿啰音，右肺闻及管状呼吸音，腹稍胀，肝肋下1.5cm，脾肋及边。血白细胞计数5.2×10⁹/L，中性粒细胞0.5，淋巴细胞0.5。

目前应采取的措施首选（）

A.调整抗菌药物

B.给镇静剂

C.应用洋地黄制剂

D.气管插管机械通气

E.胸腔闭合引流

急性前壁心肌梗死最常见的心律失常是（）

A.室性早搏及室性心动过速

B.房室传导阻滞

C.房性早搏

D.室上性心动过速

E.心房颤动

患者女性，34岁。孕3产0，末次妊娠至今已4年，一直未采取任何避孕措施，妇科检查：子宫正常大小，双侧附件区压痛明显，可及不规则片状物。

最可能的诊断是（）

A.原发性不孕

B.继发性不孕

C.继发性不孕+附件炎

D.绝对不孕+附件炎

E.原发性不孕+附件炎

Outlook中答复会议邀请的方式不包括（）。

A.接受

B.反对

C.谢绝

D.暂定