下列句子排序正确的一项是：（）（2分） ①许多好书都不是畅销书②因为畅销书毕竟是

资产负债表日，采用公允价值模式进行后续计量的投资性房地产的公允价值低于原账面价值的差额，应记入( )科目。

A．公允价值变动损益

B．资本公积

C．投资收益

D．其他业务成本

某单位已经组建了多个Ethernet 工作组网络，如果计划将这些工作组网络通过主干网互连，那么下面 哪一种是主干网优选的网络技术

A．帧中断

B．ATM

C．FDDI

D．千兆位以太网

钟摆钻具的原理及使用特点。

Questions 91 — 100 are based on the following passage. (15 points)Electronic mail has become an extremely important and popular means of communication.The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of unsolicited commercial electronic mail. Unsolicited commercial electronic mail is currently estimated to account for over half of all electronic mail traffic, up from an estimated 7 percent in 2001, and the volume continues to rise. Most of these messages are fraudulent or deceptive in one or more respects.The receipt of unsolicited commercial electronic mail may result in costs to recipients who cannot refuse to accept such mail and who incur costs for the storage of such mail, or for the time spent accessing, reviewing, and discarding such mail, or for both. The receipt of a large number of unwanted messages also decreases the convenience of electronic mail and creates a risk that wanted electronic mail messages, both commercial and noncommercial, will be lost, overlooked, or discarded amidst the larger volume of unwanted messages, thus reducing the reliability and usefulness of electronic mail to the recipient. Some commercial electronic mail contains material that many recipients may consider vulgar or pornographic in nature.The growth in unsolicited commercial electronic mail imposes significant monetary costs on providers of Internet access services, businesses, and educational and nonprofit institutions that carry and receive such mail, as there is a finite volume of mail that such providers, businesses, and institutions can handle without further investment in infrastructure. Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mail.Many senders of unsolicited commercial electronic mail purposefully include misleading information in the messages’’ subject lines in order to induce the recipients to view the messages. While some senders of commercial electronic mail messages provide simple and reliable ways for recipients to reject (or ’’opt-out’’ of) receipt of commercial electronic mail from such senders in the future, other senders provide no such ’’opt-out’’ mechanism, or refuse to honor the requests of recipients not to receive electronic mail from such senders in the future, or both.Many senders of bulk unsolicited commercial electronic mail use computer programs to gather large numbers of electronic mail addresses on an automated basis from Internet websites or online services where users must post their addresses in order to make full use of the website or service.The problems associated with the rapid growth and abuse of unsolicited commercial electronic mail cannot be solved by the government alone. The development and adoption of technological approaches and the pursuit of cooperative efforts with other countries will be necessary as well.

Which of the following is NOT true about unwanted e-mail

A．It costs money to receive them.

B．It’s free to store them.

C．It takes time to access them.

D．It takes time to throw them away.

下图中甲、乙分别是M、N河流上的水文站。两河流流域的地形地势状况相似。据图完成下列问题。

观测发现，M、N河流的径流量没有明显的季节变化，则下列叙述正确的是（）

A．甲河有结冰期

B．该地区常年盛行西北风

C．图示大陆沿岸常受台风登陆影响

D．甲、乙两水文站附近自然植被类型相同