急性左心衰竭主要表现为（） A.发作性喘息 B.夜间阵发性呼吸困难 C.突发严重呼吸

Some say that madness and genius (天才) often come hand in hand. This is especially true of the Dutch painter Vincent Van Gogh.

Van Gogh is famous for  小题1: amazing use of color and shape. Born in 1853, he was painting at a time when art was changing. A long time ago, artists tried to make their paintings look real like photographs.  小题2: later on, art became more about the artist’s own ideas. If you see a Van Gogh, it won’t look like the real world. It will look even  小题3: (beautiful).

Some of Van Gogh’s most famous paintings are of natural scenes and flowers, such as Sunflowers. He also painted many wonderful self-portraits (自画像),小题4: brought him a lot of fame. Van Gogh had a great gift for painting; however, he was a 小题5: (trouble) man. At one point, he cut off  his own ear.

Van Gogh is now one of the world’s most famous artists. But he died at the age of 37, alone and poor. Almost 小题6: knew or cared about his art at that time. Although he was a great genius, he suffered  小题7: (great). Some say that his madness was  小题8: he paid for his art.

Actually, if Van Gogh  小题9:(die) at the age of twenty, no one would have connected him with failure or mental illness. Instead he would have been remembered by those close to him 小题10: a dutiful son .

1992年8月22日，陕西某村民采到一不明物体，手感柔软，生长迅速。科学家通过活体培养、细胞观察等研究后认为，它是我国首次发现、世界罕见的珍稀生物，俗称“太岁”。

(1)下列证据中，与判断该不明物体为生物无关的是____________ ；

A．具有细胞结构

B．能进行新陈代谢

C．手感比较柔软

D．能快速生长(2)在显微镜下观察到的视野如图，要观察更大、更清晰A的结构，应先将载玻片向______   移动到合适位置，然后换用高倍镜。

设y=xcosx，则y′=______．

自规律性宫缩开始至宫口扩张3cm称()
从宫口扩张3cm开始至宫口开全称()
从规律性宫缩开始至宫口开全称()

A．第一产程

B．活跃期

C．潜伏期

D．第二产程

E．第三产程

按照交换机的端口类型划分，以下不属于交换机端口的是（）

A、普通的以太网口

B、级联口

C、电源接口

D、配置口