协议性国际分工理论认为，作为协议分工对象的商品必须具备规模经济特征。

人道毁灭(Animal euthanasia)是对那些身缠疾病或生存极其痛苦的动物，以最低的受痛苦程度，把动物生命“人为地结束”，“euthanasia”源于希腊文，有“好的死亡”或“无痛苦的死亡”的含意，因此也有人译为动物安乐死。基于道德尊重的原因，人道毁灭的动物身体绝对不作食物的目的，否则如此的行为称为“宰杀”、“屠宰”，例如宰猪、宰牛、宰鸡。
根据上述定义，下列属于人道毁灭的是( )。

A．一只出现在港岛北角的野猪被香港渔农自然护理署人员麻醉后捕获，由于身上伤势严重，已奄奄一息，工作人员决定通过注射药物的方式对其实施“安乐死”
B．某赛马场先后将数百匹赛马牵到一块洼地，由兽医注射药物杀死后就地进行掩埋，母马不能生育的，小马驹经评估不能成为优秀赛马的都在这些淘汰的赛马之列
C．小凯的宠物狗不幸遭遇了车祸后还尚存一息，没想到在宠物医院的救治过程中小狗却死亡了
D．某市爱护动物协会为了控制流浪猫的数量，将那些无人饲养的猫都做了绝育手术

阅读理解。

     People have sailed (航行) around the world in quite small boats.  It is not an easy thing to do.

Sometimes the weather gets bad.  That can be the end of a boat, and the end of everyone in it.  

Accidents can happen easily and quickly.

     One family once had an accident with some big fish.  The fish swam under their boat and bit (咬) holes

in it.   The sea water came in,  of course,  and the boat soon sank (沉没).  Hr,  these people had another

small boat-a lifeboat,  and they all got into that.  They lived and hoped for many days.  They ate and

slept, and they always hoped.  At last a ship found them.

     How do people live in a very small lifeboat? Perhaps for weeks or months? They must be strong in

every way. They must have hope-they want to live. But you cannot cat and drink hope.

     You cannot drink sea water. Drink a lot of sea water and you will quickly die. Sailors (海员)  can

drink rain water. They must catch rain water in their boat. They must also catch fish and birds for food.  

Lifeboats do not carry a cooker (炊具), and so the sailors cannot cook their food.  Raw fish (生鱼) and

bird meat is not very nice. But there is no other choice in a lifeboatl The sailors must eat

raw food, or they will die.

     What do people think about in a life boat'l They think about land, a warm bed,dry clothes, fresh water and food, food, food.

1. When sailors' boat sinks, their lifeboat gives them _________.

A. food  

B. beds    

C. rainwater  

D. hope

2. One famil'y once had an accident at sea,  because _________.

A. their boat was caught in bad weather

B. the boat knocked against (对着) a rock and sea water came in

C. some fish bit through the bottom of their boat

D. one of them knew how to sail in the sea

3. Sailors can catch _________ for food and drink at sea in a lifeboat.

A. rain water                        

B. fish and birds

C. both sea water and rain water      

D. both A and B

4. Lifeboats do not often carry a cooker, which is _________.

A. something used for cooking  

B. food for cooking

C. a large box                

D. a person who cooks food

5. Which of the following is NOT true?

A. Sailing around the world in quite small boats is not easy.

B. All the food sailors have in a lifeboat is cooked fish and bird meat.

C. Anyone who drinks a lot of sea water will die.

D. No one can live for weeks in a lifeboat unless (除非) hc is strong and wants to live.

角膜新生血管有深层、浅层两种，其中深层常侵及角膜（）

A.上皮下

B.前弹力层下

C.基质层

D.后弹力层下

E.内皮层

关于细菌性痢疾，叙述错误的有（）

A.常见致病菌为福氏志贺菌，宋内志贺菌次之

B.宋内志贺菌感染后易转为慢性

C.所有的痢疾杆菌只有内毒素

D.主要病变部位是直肠和乙状结肠

E.成年人不可能患中毒性菌痢

资源水利