问题 单项选择题

30岁,男性,突然不规则发热20余日,于5月8日急诊入院。查体:巩膜黄染,肝脾在肋下1.0cm。血白细胞总数4.0×109/L,总胆红素定量98μmol/L(正常<17.1μmol/L),ALT85单位,尿蛋白(+),肥达反应"O"1:80,"H"1:160,抗-HBs(+),下列哪项检查最有利于确定诊断().

A.血涂片检疟原虫

B.骨髓细菌培养

C.粪便细菌培养

D.凝溶试验

E.肝活检

答案

参考答案:B

解析:该中年男性病人发热3周,肝脾肿大,血白细胞偏低,肥达反应"O"和"H"均阳性,首先考虑伤寒,因并发中毒性肝炎,所以可有黄疸和肝功异常。若要确定诊断,则应找到伤寒杆菌。病人病程已3周,尽管可用粪便培养,但阳性率低,骨髓细菌培养的阳性率较高,而且阳性持续时间亦较长,所以最有利于确定诊断的检查是骨髓细菌培养。

阅读理解

 Many different tribes live in the Ituri rain forest of Africa, but the Pygmies are the most unusual. Most of the men are not much more than four feet tall. They weigh only about eighty pounds. The women are even smaller and thinner. But in spite of the fact that they are small, these people are perfectly formed men and women.

It is an exciting experience to visit a Pygmy encampment for the first time. Before you go, you must send word ahead that you are coming. Some friendly native or trader must take the message to the Tiki-Tikis. Otherwise the whole tribe will disappear into the depths of the jungle long before you have come close enough to be welcomed.

The great Ituri rain forest seems cut off from the rest of the earth. There are living, dead, and dying trees on every side. Except where a clearing has been burned and chopped out, a man may live his whole life in the Ituri and never see farther than twenty yards.

It takes sharp eyes to discover the almost hidden path to the Pygmy camp. The path is no wider than a small man’s foot. No sound breaks the silence in this part of the forest. There are no signs of people.

The stranger must walk carefully. What appears to be a bent branch may prove to be a deadly snake. A spotted gold patch of sunlight may be a crouching leopard(豹).

Even the Pygmy camp comes as a surprise. The leafy shelters in which the little people live are hardly three feet high. They look so much like the surrounding undergrowth that they might easily be passed by. These houses contain no furniture of any sort. The beds are merely plantain leaves spread out on the earth floor. There are no cooking pots: food is eaten raw or smoked over a fire. Spears, bows and arrows are the only possessions of these people. When the tribe moves to a new camp there is nothing to carry except these weapons and babies too small to walk.

小题1:According to the passage, we can conclude _____.

A.the Pygmies are the shortest tribe worldwide

B.the Pygmies are short but normal in mentality

C.most of the Pygmy men are more than four feet

D.the Pygmies live in the forest of America小题2:Paragraph 2 mainly suggests that the Pygmies ______.

A.are unwilling to communicate with people outside

B.are very cruel and they will kill you with the spears

C.are friendly to the tourists visiting them for the first time

D.move so fast and often that can’t be caught up with easily小题3: Which of the following word can describe the life of Pygmy?

A.Quiet.

B.Active.

C.Hard.

D.Busy.小题4:Which of the following is TRUE of the Pygmy?

A.Their houses can’t be easily found in the hurt rain forest.

B.Their houses, which are three feet high, are made of wood.

C.Weapons and cooking pots are their most valuable possessions.

D.They are living in harmony with dangerous animals around.

单项选择题