新生儿(女)，日龄5d。食欲及精神较好，母亲在给其换尿布时发现其会阴部有血性分泌物。

4的平方根是 [ ]

A.2

B.16

C.±2

D.±16

根据文意，补写空白处的语句，句式与上文大体一致。（４分）

光阴，谁也无法描绘出他的面目，但世界上处处能听到它的脚步。

它慷慨，不管你是一介布衣，还是权重如山，你都能将它肆意挥霍；

它吝啬，　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 ；

你珍重它，它便在你的身后长出绿荫，结出沉甸甸的果实；

你漠视它，　 　 　 　 　 　 　 　 　 　 　 　 　 　 。

区域市场品类规划，包括的内容有（）等。

A、根据确定的划分标准，勾画总体的卷烟品类结构。

B、综合考虑多种因素，设定合理的品类宽度，对每个品类中的商品组合结构进行角色界定

C、根据品类市场容量及现状评估，界定各个品类的角色地位，明确各个品类的发展目标

D、按照营销创新的原则，围绕品类生命周期，以精准营销为切入点，对各品类进行科学细致的谋划

D

Any mistake made in the printing of a stamp raises its value. A mistake on one inexpensive postage stamp has made the stamp worth a million and a half times its original (本来的) value. The mistake was made more than a hundred years ago in the British colony (殖民地)of Mauritius, a small island in the Indian Ocean. In 1847 an order for stamps was sent to a London printer—Mauritius was to become the fourth country in the world to issue (发行) stamps.
Before the order was delivered(传达), a party was planned at Mauritius’Government House, and stamps were needed to send out the invitations. A local printer was told to copy the design for the stamps. He printed the words " Post Office " instead of " Post Paid " by mistake on the several hundred stamps that he printed.
Today there are only twenty-six of these misprinted stamps left—fourteen Onepenny Orangereds and twelve Twopenny Blues. Because of the Twopenny Blue’s rareness (稀少) and age, collectors have paid as much as $ 16800 for it.

$ 16800 is the collector’s value of ______.

A．the Onepenny Orange—Red

B．a correctly printed 1847 stamp

C．the Twopenny Blue

D．both A and C

商业模式就是企业如何实现利润的方式。