选中某一个仓库进行数据备份，提示“没有可用的数据，不能备份！”，不可能是原因是？（）

女性患者，50岁。病理诊断为胃原位癌，原位癌的概念是（）

A.没有发生转移的癌采集者退散

B.光镜下才能见到的微小癌

C.无症状和体征的癌

D.非典型增生累及上皮全层，但未突破基底膜

E.早期浸润癌

下面图甲是“发达国家和发展中国家城乡人口比重的变化情况图”，图乙是“世界人口增长情况图”。

读图，完成（1）——（3）题。

（1）图甲中，代表发达国家城市人口的是[ ]

    A、①

    B、②

    C、③

    D、④

（2）从1980年至2000年，发展中国家乡村人口数量[ ]

    A、增加了约13亿

    B、增加了约3亿

    C、减少了约13亿

    D、减少了约3亿

（3）下列各类人口，当前机械增长率最高的是[ ]

    A、发达国家城市人口

    B、发达国家乡村人口

    C、发展中国家城市人口

    D、发展中国家乡村人口

Sightseeing Tours in Germany

Germany has a variety of cities each with its own characteristics, from the busy city of Berlin, to the ancient city of Cologne, to the Bavarian capital of Munich．Thankfully, these major German cities offer sightseeing tours that offer the opportunity to better explore the surrounding regions and the country’s most historic sites．

Berlin on Bike

berlin image by Jürgen Remmer from Fotolia.com 

Berlin on Bike takes visitors through the German capital via five bicycle tours, all with guides．Regular tours include the Wall Tour and Berlin’s Best, with stops at some of the city’s most famous landmarks, such as the Reichstag and the Berlin Wall．Specialty tours include the East Unplugged, which explores what life was like in East Berlin under Communist rule．The cost of the tour includes

the bike and helmet rental, and tourists may choose to continue renting their bikes once the tour has ended．

berlinonbike.de/english/index.php

Munich City Sightseeing Tour

The Munich City Sightseeing Tour transports travelers throughout the city via an open-air, double-decker bus．Passengers can hop on and off at various stops throughout the day．This tour includes stops at such sites as the Munich central train station, the 1972 Olympic Stadium Park, Munich’s opera house and Karlsplatz, the gate to the historic city．The bus features a narrated tour guide and offers an English-language option．

raileurope.com/activities/munich-city-sightseeing-tour/index.html

Nice City Tours－Cologne

Nice City Tours offers three tours of Cologne, available to private or business groups in a variety of languages．The Old Town Tour runs for two hours and includes a guided tour of the Cologne Cathedral and some of the city’s old squares．The Brewery Pub Tour explores some of the city’s most beloved breweries and pubs, and details the history behind Kolsch, Cologne’s resident beer．Finally, the Old Town and Rhine Tour begins by visiting some of old town’s most historic sites and ends with a ride down the Rhine River．

nicecitytours.com/tours.htm

68．The similarity of the three tours lies in that they all include ________.

A．bus tours  B．English service       C．three routes           D．guide’s service

69．If you take a great interest in beer, which tour might be suitable for you?

A．The Wall Tour         B．The Brewery Pub Tour

C．The Old Town Tour  D．The Munich City Sightseeing Tour

70．Where can you probably see this passage?

A．In a textbook          B．On a website          

C．In an encyclopedia   D．In a journal

自动喷淋灭火系统中，吸水管变径连接时，采用（）方法连接。

金融机构申请开办衍生产品交易业务，应具有风险模型研究人员或风险分析人员至少（）名。

A.1

B.2

C.3

D.4