一组数据x1，x2，x3，x4，x5，x6的平均数是2，方差是5，则2x1+3，

根据句子意义选择方框内所给单词或短语

小题1:I didn’t hear the clock __________, so I slept until noon .

小题2:I lost my passport ,but I have a paper from the USA Embassy that can prove my __________.

小题3:There will be a meeting next week to ________ better understanding between the two countries.

小题4:Bob was running after Jack in the classroom when the teacher ______________

小题5:The old lady was near to dying of stomach cancer, but to everyone’s surprise she _____________.

小题6:I’d like a cup of coffee, and a glass of water____________.

小题7:Lee ___________________ his finest clothes at Susan’s birthday party.

小题8:He walked __________________in his room , thinking about the difficult maths problem.

小题9:Some cruel experiments on animals are _________________in the name of science.

小题10:I was strongly ____________ what he said .

闭路电视监视系统质量的主观评价方法和要求评价人员不应少于五名，并应包括专业人员和（）。

试述谈判环境因素分析。

(4～6题共用题干)一家长带其5岁患有发绀型先天性心脏病的小孩来心血管门诊就诊，问病史：息儿自1岁起即发现口唇发绀，活动后加剧，喜坐少动，有蹲踞现象。查：胸骨左缘第2肋间可闻及Ⅱ～Ⅲ级SM，动脉血氧饱和度80％，X线片示心脏呈靴状，心尖钝圆上翘，两侧肺纹理减少

家长诉说：患儿2岁时在当地医院即已确诊为上述疾病，近年来发绀越来越重，而医生检查说心脏杂音越来越轻，如何解释这一现象

A．肺动脉狭窄有所减轻

B．左向右分流减少

C．支气管动脉与肺血管之间形成侧支循环

D．肺动脉狭窄显著加重

E．右向左分流减少

电台的保密制度中不包括（）。

A、不得在公共场所、私人通信及与无关人员谈话中泄露通信机密、通信内容等

B、不得在机上询问机密事项

C、电台通信密件，必须妥善保管，不得私自外带、摘抄，如有遗失泄密，立即上报

D、不能进行私人通信