下列结果单独存在不能充分说明主动脉瓣关闭不全系风湿性的是（） A.主动脉瓣短缩，增厚

请认真阅读下面的对话, 并根据各题 所给的首字母提示, 在标有题号的横线上, 写出一个英语单词的 完整、正确形式, 使对话通顺.

K= Karen

S= Selina

K: You're late again.

S: Sorry, but there was a traffic j  l  .

K: It's always the same excuse. Try to think of something better next time.

S: But I'm telling the truth ! There was an a  2   in the cross-harbor tunnel. I don't think anyone

    was hurt but it t   3  the police over an hour to clear it. Anyway, how are you? You look a bit tired.

K: Well, actually, I've been q   4     with my grandmother again. I feel sad because if things go w    5     ,

     she blames me , even though it's not my fault.

S : What did your grandma say?

K : Her favorite expression is " Young people are not as well behaved as they u  6   to be. "

      She always complains that I don't show her enough r  7  .

S: Well, try and understand her. She can't do all the things she did w    8     she was young. It must

     be very frustrating. Just think , one day we'll be old…

K:You're right. I should be more u  9  . l think I'll buy her a present and apologize.

S : Right. Now you are feeling a bit better,it's your turn to help me. Could you give me a hand 

     with my maths homework?

K: Maths again! Okay,but can we find some where to e  10  first? I'm starving !

企业任何项经济业务的发生，都会引起会计等式两边金额发生增减变化，但不会破坏等式的平衡关系。( )

视频服务器的视频点播通常属于大数据块，连接的IO密集型业务，其视频数据存储适用于SAN存储。

马克思说：“为确定人，现实的人，你就有规定，就有使命，就有任务，至于你是否意识到这一点，那都是无所谓的。这个任务是由于你的需要及其与现实世界的联系而产生的。”不同时代的青年有不同的历史使命，当代大学生需承担的历史使命是（）。

A.追求真理

B.建设中国特色社会主义

C.实现中 * * 伟大复兴

D.建设世界一流强国

变压器油的正常颜色为（）色。

A.褐

B.亮黄

C.暗红

D.棕