导致原发性心肌损害的疾病是（） A.心肌炎 B.主动脉瓣狭窄 C.主动脉瓣关闭不全

测题的编写时，题目的来源包括（）。

A.临床观察和记录

B.理论和专家的经验

C.已出版的标准测验

D.社会性的调查研究

跌落式熔断器运行与维护的主要内容包括：瓷件、安装状况、触头状况、活动部分的性能以及消弧管是否满足要求。详见第四章第四节。跌落式熔断器的运行检查项目包括（）。

A、瓷件是否清洁，有无裂纹、损伤、放电痕迹；

B、安装是否牢固；

C、触头弹簧片弹性有无退化。

某学生利用物质间的互变，设计成一个平面魔方，如下图所示:

已知①A、B、C、D、G含有同种元素。

②E是通常情况下密度最小的气体；B与硝酸银溶液反应生成不溶于稀硝酸的白色沉淀。B具有氧化性，能将SO₂氧化为F(H₂SO₄)，F与A反应生成E、G。

依据以上信息填空：

（1）请写出E的电子式　　　　　、D的化学式            。

（2） 请指出A、B、C、D、G所含的同种元素在周期表中的位置第   周期第   族，

（3）Ｇ生成Ｃ的过程中所出现的现象为　　　　　　　　　　　　　　　　　　　　

（4）写出下列反应的化学方程式：

E→A 　　　　　　　　　　　　 　　　A→B　　　　 　　　　　　　　

（5）B→F的离子方程式为　　　　　　　　　　　　　　　　

Today, we’ll be discussing EQ: emotional intelligence quotient. Your emotional intelligence quotient seems to indicate how well you (1) your own emotions, and bow well you (2) to others.
EQ is not exactly a new idea, but the (3) itself is a new one. People have realized the way you control your feelings is just as important as your (4) — maybe even more important.
The focus of today’s session is: can you learn EQ Some (5) school teachers think that some kids have (6) EQ’s than others. Even at five or six years old, some of the kids tend to be much more (7) and (8) than others. Another example is that kids deal with (9) in different ways. One may get frustrated with a (10) problem, but another child, with a higher EQ, might be able to handle the situation better. She might try (11) ways to approach the problem, or ask for (12) .
Can you (13) to have a higher EQ People seem to have different views on this question. Most of the people believe that the answer to this question is (14) . For example, kids can be (15) to have patience and not to give up when things go wrong. They learn to respond well to their (16) But others don’t agree. They find that some people never learn to (17) their EQ. The problem is that people with a low EQ have a (18) time seeing how their behavior affects other people. They see no reason to (19) They’ll probably never adjust their (20) .

下列现象属于自发性单性结实的是（）

A.西洋梨子房受冻后能结实

B.葡萄经花粉刺激后的结实

C.玫瑰香葡萄果穗中的小粒葡萄

D.花期浓雾后导致橄榄的结实