问题 问答题 简答题

试述隐睾症的病理特点。

答案

参考答案:

隐睾症的病理特点:(1)大体病理:睾丸常有不同程度的发育不全,体积明显小于健侧,质地松软。部分病例伴有睾丸、附睾发育异常,如睾丸与附睾分离,附睾头或输精管缺如。(2)组织学改变:①主要是精曲小管病变,如精曲小管较小,精原细胞减少,精曲小管周围胶原组织增生。成年人的隐睾,其精曲小管有退行性变,几乎看不到正常的精子。隐睾的病理在出生后的第二年就有明显改变,38%患儿的睾丸没有生殖细胞。睾丸位置越高,组织发育越差。②隐睾的间质细胞受累较轻。即使双侧隐睾,间质细胞仍能分泌足量雄酮以维持正常男性特征和性生活能力。③对侧降至阴囊内的睾丸也可能有某种程度的发育畸形或交感性病变。

单项选择题
阅读理解

The oldest and hardest cow beef may be made as tender and tasty as young and choice met. ”This declaration was made by the French physicist Denis Papin in book published in 1681, which described his “New Digester” or pressure cooker.  It was a cast iron pot with an air-tight lid, which allowed liquids to boil at a higher temperature than usual, and so it cooked food in a quarter of the time.  The food was cooked by pressurized steam being forced through it at about 121℃.  All pressure cookers were made of cast iron until 1905,  when the first aluminum model was made in America. In 1938, Alfred Vischer, a man from Chicago, U. S. A., designed a simple interlocking pan and lid, and an improved pressure-tight seal(密封)—a replaceable rubber sealing ring. When Vischer’s patent(专利)expired in 1954,  many companies entered the field,  and the rapid pressure cooker became popular with people with people who had little time to cook or had to supply food for unexpected guests.

小题1:From the passage we can learn pressure cooker made of cast iron lasted at least ____years.

A.300

B.200

C.90

D.60小题2:Which of the following shows the correct order?

a.        Denis Papin called his invention “New Digester”.  

b.        It began to be widely used by common families.

c.        Instead of cast iron,  it was first made of aluminum. 

d.        The first pressure cooker was invented in France.

e.        Alfred Vischer greatly improved its design.           

f.         Vischer’s patent came to an end.

g.  Many other companies began to produce it.

A.d, a, e, c, g, f, b

B.a, d, c, b, e, f, g

C.d, a, c, e, f, g, b

D.g, e, a, e, d, f, b小题3:In the writer’s opinion, the best advantage of a pressure cooker is that_______.

A.the oldest and hardest cow beef can be made tender and tasty

B.it allows liquids to boil at a higher temperature than usual

C.it can help people to supply food for unexpected guests

D.it helps people to spend much less time in cooking小题4:The best title of this passage may possibly be _______.

A.New Digester

B.Pressure Cooker

C.Favorite Cook

D.The History of Cooker