领导干部经济责任审计，一般采取哪种审计方式？（）A、报送审计方式 B、专项审计 C、抽样

阅读下列材料回答问题：

材料一

材料二 乾隆二十二年（1757年）时，自以为“天朝物产丰盈，无所不有，无须与外国互通有无。”并下令关闭沿海其他口岸，只留广州一个口岸对外通商，并以《防夷规条》限制外国人在华的活动。

材料三 1990年，中 * * 决定开发浦东。经过十多年的发展，浦东新区已经成为“中国改革开放的窗口”和上海现代化建设的缩影，上海正日益融入世界经济发展的潮流中。

（1）材料一是我国对外交往史上的典范，请写出上图所反映的历史事件的名称及其历史作用。

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（2）依据材料二判断这是清朝推行的什么对外政策？对我国产生了什么危害？

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（3）上海外滩的形成和浦东新区的开发体现了世界经济发展的什么趋势？

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（4）依据上述材料并结合所学知识谈谈你对我国对外政策的认识。

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线性含源二端网络可以用一个电压源等值代替，电压源的内阻等于原含源二端网络变为无源二端网络的（）电阻。

A.开路

B.等效

C.入端

D.线性

(8分)某简单微粒的结构示意图为:且X、Y 均为不大于20的正整数，据此回答下列问题：

（1）若该微粒一般情况下不与其它元素的原子反应，这种微粒的符号是            ；

（2）若该微粒有很强的非金属性，且只需得到一个电子就能达到稳定结构，这种微粒的结构示意图为               。

（3）若该微粒为一价阳离子，且对应的碱为可溶性强碱，则x＝    　，y＝        。

K尺寸的内容有哪些？

Islamabad, Pakistan, June 22^nd---Two mountain climbers surprisingly survived (幸免于) a fall of over 500 feet on the 25,530-foot mountain in Pakistan, Saturday. The two climbers were climbing an ice-covered wall of the mountain when they suddenly lost their footing and fell about 560 feet to a narrow snow-covered ledge(悬崖突出部分) below. “We were lucky that ledge was there,” said the climbers, “Otherwise, we would have fallen over 2,000 feet.” If the ledge had not been there, the two climbers almost certainly have met their death. “It’s a wonder,” the climbers said, “that we landed on the ledge, and the snow was loose enough to cushion(缓冲) our fall. We’re thankful that we survived.”

When a reporter asked them if they planned to give up mountain climbing after their narrow escape(九死一生), the two climbers replied, “Not at all. We’ll be going back up there just as soon as we get out of the hospital.”

小题1: The mountain climbers survived because _____.

A．they had fallen only 500 feet down

B．of the ledge and the loose snow on it

C．of their strong bodies

D．they were very good climbers小题2: If there had not been the snow-covered ledge, _____.

A．they wouldn’t have fallen down

B．they would have them wounded

C．they would have lost their lives

D．they would fall into the deep snow小题3: How high was the ledge from the foot of the mountain?

A．2,560 feet high

B．2,000 feet high

C．25,530 feet high

D．More than 1,400 feet high小题4: Choose the right order which shows what happened to the two climbers.

a. talked with a reporter           b. lost their footing 

c. was sent to a hospital           d. fell to a ledge     

e. started to climb an ice-covered wall

A．b-d-c-e-a

B．e-d-b-c-a

C．e-b-d-c-a

D．a-c-b-d-e