小球从离地板5m高处落下，又被地板弹回，在离地板2m高处被接住．则小球通过的路程和位

如果一国的国际收支因为本国的通货膨胀率高于他国的通货膨胀率而出现不均衡，则称该国的国际收支不均衡是（）。

A．收入性不均衡

B．货币性不均衡

C．周期性不均衡

D．结构性不均衡

It is under the CPC’s leadership that China has overcome many challenges in its economic, political and social systems and achieved remarkable progress the world has ever seen. Under the CPC’s leadership, China has become the world’s largest second largest economy. People’s lives have greatly improved, and hundreds of millions of people have been lifted out of poverty, an objective fact no one can deny. At the same time, China is quickly becoming a major player on the world stage.

As a responsible nation, China has been playing a growing role and shouldered greater responsibilities in world affairs. Such achievements, especially for a nation with a size equaling to a continent and a population of nearly 1.4 billion, are not easy to make. What roles do you think CPC has played in China? Do you think it’s the CPC leadership that has made China’s economic miracle possible? Is there any room for improvements for the future role of CPC? What challenges will lie ahead for the future leadership of CPC? Please share your opinion with us.

小题1:The purpose of writing the article is to ______.

A. describe the greatest changes in China.

B. describe the importance of China.

C. tell us some challenges facing the CPC. 

D. gain more information about the roles the CPC plays in China.

小题2:According to the passage, CPC refers to              .

A．Communist（ * * 主义） Party of China

B．Cost Per Click（每次点击付费广告）

C．card-programming control （卡片程序控制）

D．Computer Process Control（计算机过程控制）小题3:How does the author feel about the roles the CPC has played in China?

A．Dissatisfied

B．Amazed

C．Annoyed

D．Proud小题4:The underlined word " miracle " in Paragraph 2 probably means _____.

A．problem

B．disaster

C．wonder

D．event小题5:What’s the best title for this passage?

A．What roles do you think CPC plays in China?

B．Why has CPC played an important role in China?

C．China has become the world’s second largest economy.

D．China has overcome many challenges and achieved remarkable progress.

69岁男性，咳嗽、胸闷、呼吸困难并大汗2h，无胸痛，2年前心电图提示有前间壁陈旧性心肌梗死，但患者既往无心前区疼痛病史，无高血压病史，平时不口服药物。查体：体温36．5℃，收缩压140mmHg，脉搏110／min，呼吸30／min，双肺布满湿啰音和哮鸣音。

对急性心肌梗死的治疗描述错误的为（）

A.有条件90min内行介入治疗

B.对ST抬高及非ST抬高心肌梗死均应在30min内溶栓治疗

C.立即服阿司匹林300mg

D.ACEI可改善预后，要早期即使用

E.解除疼痛很重要

通过在被关注特性与潜在影响因素之间建立模型来研究其相互之间因果关系的统计技术称为（）。

A.实验设计

B.假设检验

C.测量分析

D.回归分析

已知二叉树BT的后序遍历序列是dabec，中序遍历序列是debac，它的前序遍历序列是 ______。

A．cedba

B．acbed

C．decab

D．deabc