慢性高原病分为____________、___________、__________

关于世界降水量分布的叙述，正确的是：[ ]

A．从低纬地区向高纬地区逐渐减少

B．南北回归线附近的大陆东岸降水少　

C．赤道附近降水多，两极地区降水少

D．温带地区降水多

设有这样两个工艺方案：方案1的可变成本为10元/件，固定费用总额为23万元;方案2的可变成本为7元/件，固定费用为35万元。那么，从经济的角度来评价，当该产品产量为()时，采用两种工艺方案均可。

A、80000件

B、85000件

C、63000件

D、40000件

Usually, when your teacher asks a question, there is only one correct answer. But there is one question that has millions of correct answers. That question is “What’s your name?” Everyone gives a different answer, but everyone is correct.

Have you ever wondered about people’s names? Where do they come from? What do they mean?

People’s first names, or given names, are chosen by their parents. Sometimes the name of a grandparent or other member of the family is used. Some parents choose the name of a well-known person. A boy could be named George Washington Smith; a girl could be named Helen Keller Jones.

Some people give their children names that mean good things. Clara means “bright”; Beatrice means “one who gives happiness”; Donald means “world ruler”; Leonard means “as brave as a lion”.

The earliest last names, or surnames, were taken from place names. A family with the name Brook or Brooks probably lived near a brook (小溪); someone who was called Longstreet probably lived on a long, paved road. The Greenwood family lived in or near a leafy forest.

Other early surnames came from people’s occupations. The most common occupational name is Smith, which means a person who makes things with iron or other metals. In the past, smiths were very important workers in every town and village. Some other occupational names are: Carter—a person who owned or drove a cart; Potter—a person who made pots and pans.

The ancestors of the Baker family probably baked bread for their neighbors in their native village. The Carpenter’s great-great-great-grandfather probably built houses and furniture.

Sometimes people were known for the color of their hair or skin, or their size, or their special abilities. When there were two men who were named John in the same village, the John with gray hair probably became John Gray. Or the John who was very tall could call himself John Tallman. John Fish was probably an excellent swimmer and John Lightfoot was probably a fast runner or a good dancer.

Some family names were made by adding something to the father’s name. English-speaking people added –s or –son. The Johnsons are descendants of John; the Roberts family’s ancestor was Robert. Irish and Scottish people added Mac or Mc or O. Perhaps all of the MacDonnells and the O’Donnells are descendants of the same Donnell.

小题1: Which of the following aspects do the surnames in the passage NOT cover?

A．Places where people lived.

B．People’s characters.

C．Talents that people possessed.

D．People’s occupations.小题2:According to the passage, the ancestors of the Potter family most probably _______.

A．owned or drove a cart

B．made things with metals

C．made kitchen tools or containers.

D．built houses and furniture.小题3:Suppose an English couple whose ancestors lived near a leafy forest wanted their new-born son to become a world leader, the baby might be named ________.

A．Beatrice Smith

B．Leonard Carter

C．George Longstreet

D．Donald Greenwood

患者王某，男，16岁，学生，因"面部、上胸背部丘疹、脓疱、结节、囊肿5个月"入院。患者5个月前无明显诱因在面部、上胸背部出现丘疹、脓疱、结节及囊肿，有触痛，时轻时重，逐渐增多，部分皮疹有破溃、结痂，形成散在瘢痕。发病以来一般情况可，睡眠、饮食及大小便无特殊。既往无药物过敏史，无服用糖皮质激素、溴、碘等药物史，也无焦油、沥青、卤代烃类化合物接触史，否认家族中有类似患者。

依据面部皮疹特征，患者最可能患的疾病是（）

A.寻常性痤疮

B.脓疱性痤疮

C.聚合性痤疮

D.结节性痤疮

E.药物性痤疮

F.职业性痤疮

属于使用排烟机排烟的方法是（）。

A、自然排烟

B、人工排烟

C、喷雾水排烟

D、机械排烟