Before liberation , child laborers were

补写出下列名篇名句中的空缺部分。(任选3题，多选则按前3题计分)(6分)

(1)淇水汤汤，                      。女也不爽，                       。 (《诗经·氓》)

(2)盖将自其变者而观之，                     。自其不变者而观之，                      。 (苏轼《赤壁赋》)

(3)曲终收拨当心画，                       。                            ，唯见江心秋月白。  (白居易《琵琶行》)

(4)箫鼓追随春社近，                  。从今若许闲乘月，                 。 (陆游《游山西村》)

一旦确诊，首要的护理措施是( )

A．建立静脉通道，补充血容量

B．保持呼吸道通畅

C．应用血管收缩剂

D．纠正酸中毒

E．给予抗凝药

粪便隐血试验时，患者最好素食（）

A.2天

B.3天

C.4天

D.5天

E.6天

Personal firewall is a technology that helps______intruders from accessing data on your PCvia the Internet or another network, by keeping______data from entering or exiting your system.
Hackers do not just target national security organizations for______: They want your taxreturns, network passwords, or bank account numbers. And you do not want the FBI kicking in yourdoor because someone hijacked your PC to______in the latest denial-of-service attack on theInternet. Now that "always-on" broadband connections such as cable modems and digital subscriberline are becoming more popular, home users are at risk. Fortunately, you can protect your data.Firewalls can block______ attacks and protect your PC from outside threats.

A．attacks

B．aggression

C．help

D．repair

锅炉给水中为了防止氧腐蚀，必须控制给水的（）。

A.浊度

B.含氧量

C.电导率

D.PH值