什么叫大体积砼？

病历摘要：患者男性，68岁，反复心前区闷痛1周入院，并出现夜间阵发性呼吸困难，端坐呼吸。PE：血压180/100mmHg，心率80次/分，心尖部可闻及3/6级收缩期杂音，S3，两下肺可闻及稍许细小湿性啰音。双下肢无浮肿。

此时应诊断为（）提示：心电图检查示：V1～3呈病理性Q波，STV4～6压低0.2mV；超声心动图示：左房45mm，左室60mm，EF35%，左室可见节段性室壁运动障碍。肌钙蛋白阴性。

A.冠心病

B.陈旧性心肌梗死

C.不稳定型心绞痛

D.扩张型心肌病

E.充血性心力衰竭

F.缺血型心肌病

通常原核生物细胞里只有（）染色体，且DNA含量（）真核生物。

某校九年级（2）班同学准备召开一次关于“民族问题”的主题班会，他（她）们通过各种途径搜集到如下材料：

材料一：在新疆乌鲁木齐市“7·5”打砸抢烧严重暴力事件期间，很多维吾尔族群众挺身而出，主动营救和保护汉族群众；我国民族自治地方的人民代表大会有权依照当地民族的政治、经济和文化的特点，制定自治条例和单行条例；我国《选举法》规定：“全国少数民族应选全国人民代表大会代表。人口特少的民族，至少应有代表一人。”

材料二：当前，我国还存在一些影响国家统一和民族团结的因素；民族间的经济文化发展还不平衡，少数民族地区的经济文化发展还比较落后。

（1）材料一是如何体现我国民族政策的？

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（2）如你参加本次主题班会，请你从公民的基本义务和国家发展战略的角度，为解决材料二中的问题各提一条建议。

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阅读理解。

     People from East Asia tend to have more difficulty than those from Europe in distinguishing facial

expressions-and a new report published online in Current Biology explains why.

       Rachael Jack,University of Glasgow researcher,said that rather than scanning evenly (均匀的) 

 across a face asWestemers do,Eastemers fix their attention on the eyes.

     "We show that Eastemers and Westemers look at different face features to read facial expressions,

" Jack said." Westemers look at the eyes and the mouth in equal measure.whereas Easterners favor the

eyes and neglect(忽略) the mouth. "

      According to Jack and her colleagues,the discovery shows that human communication of emotion is

more complex than previously believed. As a result,facial expressions that had been considered

universally recognizable cannot be used to reliably convey emotion in cross-cultural situations.

       The researchers studied cultural differences in the recognition of facial expressions by recording the

eye movements of 13 Westem Caucasian and 13 East Asian people while they observed pictures of

expressive faces and put them into categories: happy,sad,surprised,fearful,disgusted,angry,or neutral.

They compared how accurately participants read those facial expressions using their particular eye

movement strategies.

     It turned out that Eastemers focused much greater attention on the eyes and made significantly more

errors than Westerners did.  "The cultural difference in eye movements that they show is probably a

reflection of cultural difference in facial expressions,"Jack said." Our data suggest that whereas

Westemers use the whole face to convey emotion, Eastemers use the eyes more and mouth less."

       In short,the data show that facial expressions are not universal signals of human emotion.  From

here on,examining how cultural factors have diversified these basic social skills will help our understanding of human emotion.  Otherwise, when it comes to communicating emotions across cultures, Eastemers and Westemers will find themselves lost in trans- lation.

1. The discovery shows that Westemers _______.   

A. pay equal attention to the eyes and the mouth

B. consider facial expressions universally reliable

C. observe the eyes and the mouth in different ways

D. have more difficulty in recognizing facial expressions

2. What were the people asked to do in the study?            

A. To make a face at each other.                

B. To get their faces impressive.

C. To classify some face pictures.              

D. To observe the researchers' faces.

3. What does the underlined word "they" in Paragraph 6 refer to?   

A. The participants in the study.

B. The researchers of the study.

C. The errors made'during the study.

D. The data collected from the study.

4.  In comparison with Westemers,Eastemers are likely to _______ 

A. do translation more successfully

B. study the mouth more frequently

C. examine the eyes more attentively

D. read facial expressions more correctly

5. What can be the best title for the passage?  

A. The Eye as the Window to the Soul.

B. Cultural Differences in Reading Emotions.

C. Effective Methods to Develop Social Skills.

D. How to Increase Cross-cultural Understanding.

预备区：主要进行炉料的（）和预热