下列属于Ⅰ型超敏反应性疾病的是（） A.接触性皮炎 B.荨麻疹 C.新生儿溶血 D.

下列句子中，加线的成语使用不正确的一项是[ ]

A．学校里教学秩序整顿以后，以前那种不正常的师生关系也应该改弦更张了。

B．面对无数个“豆腐渣”工程的无辜牺牲者，面对亲人撕心裂肺的痛苦，我们无法再保持沉默！

C．就民族矛盾和冲突而言，科索沃问题与北爱尔兰问题在性质上是相同的，而美国与北约对二者的态度何止天壤之别！

D．最近微软的盖茨先生访问中国并推出“维纳斯”计划，这在我国信息产业界掀起了轩然大波。

沟流可分为贯穿沟流和（）两种。

阅读理解。

     The man who brings my milk used to knock for his money for the week's milk while I was eating breakfast

on Saturday morning. Just lately he has been arriving before I get up. Workforce shortages mean that four men

are sharing five rounds, so he has to start earlier.

     Delivering milk to people's homes is hardly good business, especially when the customer may have a choice

of two or three firms serving a single road. In spite of my local difficulties, however, labor troubles are not as

great as a few years ago. There are enough men prepared to make an early moming start for the sake of an

open-air job with a fair measure of freedom. If they did stop calling, women would find it hard work to collect

all the milk they need from self-service stores. Dairies (乳品业) know that stopping deliveries in the United

States resulted in falling sales.

     Marketing ideas have included introducing extra lines, in addition to dairy products, which the milkmen can

carry to increase business. One dairyman said, "It won't be long before the milkman delivers more bread than

milk." Some milkmen deliver potatoes, and it seems as though variety will be limited only by the size of the

trucks.

     So the milkman is likely to remain a familiar figure, and the dairy products he sells are unlikely to change

very much in this decade. Flavored milk is popular on the Continent. In Britain those who like it buy plain milk

and add their own flavoring. Even the returnable bottle continues to be used. As long as it has a reasonable life-

30 to 40 trips are usual-the cost of collection and cleaning is worthwhile.

1. The milkmen now start earlier on their delivery rounds than be- fore because _____. [ ]

A. there is an increasing demand for milk delivery

B. they hope to reach the customers' home in time

C. they have to collect the money for the week's milk house to house

D. dairies are short of deliverymen and the companies worry about falling sales

2. Why are there enough men prepared to make an early morning start? [ ]

A. Because they can enjoy a certain amount of freedom in the fresh air.

B. Because they like working outdoors and breathing the air freely.

C. Because they can enjoy a great amount of freedom outdoors.

D. Because they like walking freely in the fresh air.

3. Which of the following statements is NOT true? [ ]

A. One of the marketing ideas is variety.

B. The milkman now delivers more bread than milk.

C. Milkmen have taken over many rounds given up by bakeries.

D. Some milkmen deliver potatoes in addition to dairy products.

4. According to the passage, in this decade ____. [ ]

A. milkmen will disappear very soon

B. flavored milk will become popular in Britain

C. people will buy milk from self-service stores

D. there will be little change in the dairy business

5. It can be inferred from the passage that ____. [ ]

A. the British people seldom buy plain milk

B. the returnable bottles are no longer used

C. collection and cleaning of the retumable bottles cost nothing

D. the returnable bottles won't be thrown away until they are used dozens of times

患者男性，27岁，剧烈腹痛1d，发热，查体：全腹压痛，反跳痛，肌紧张，该患者常被迫采取缓解腹痛的体位是

A．俯卧位

B．侧卧位

C．仰卧位，双下肢屈曲

D．仰卧位，双下肢伸直

E．半卧位

原发性骨性关节炎的主要发病原因是（）

A、外伤

B、先天畸形

C、关节软骨退行性改变

D、肥胖