在《汽车货物运输规则》中对普通货物分为三等。以一等货物为基数，二、三等货物采用固定比

设U=R，A={x|a≤x≤b}，C_UA={x|x＞4或x＜3}，则a=______，b=______．

1998年某省工商行政管理局决定——经济合同无效，合同一方当事人不服，经向国家工商行政管理局申请复议后，对复议决定仍然不服而向人民法院起诉。

如果国家工商行政管理局经复议改变省工商行政管理局的决定，合同一方当事人对复议决定不服而向人本文转自公务员考试信息网(www.sdsgwy.com) 2011国家公务员考试民法院起诉，应由( )。

A．某省工商行政管理局所在地的基层人民法院管辖

B．某省工商行政管理局所在地的中级人民法院管辖

C．北京市基层人民法院管辖

D．北京市中级人民法院管辖

阅读理解。

     Domestic (驯养的) horses now pull ploughs, race in the Kentucky Derby, and carry police. But early

horses weren't tame (驯服的) enough to perform these kinds of tasks. Scientists think the first interactions

humans had with horses were far different from those today.

     Thousands of years ago, people killed the wild horses that lived around them for food. Over time, people

began to catch the animals and raise them. This was the first step in domestication.

     As people began to tame and ride horses, they chose to keep those animals that had more desirable

characteristics. For example, people may have chosen to keep horses that had a gentle personality so they

could be ridden more easily. People who used horses to pull heavy loads would have chosen to keep stronger

animals. Characteristics like strength are partly controlled by the animals' genes. So as the domesticated horses

reproduced, they passed the characteristics on to their young. Each new generation of houses would show

more of these chosen characteristics.

     Modern day horse breeds come in a wide variety of shapes and sizes. This variety didn't exist in the horse

population before domestication. The Shetland horse is one of the smallest breeds-typically reaching only one

meter tall. With short, strong legs, the animals were bred to pull coal out of mine shafts (矿井) with low

ceilings. Huge horses like the Clydesdale came on the scene around 1700. People bred these heavy, tall horses

to pull large vehicles used for carrying heavy loads.

     The domestication of horses has had great effects on societies. For example, horse were important tools

in the advancement of modern agriculture. Using them to pull ploughs and carry heavy loads allowed people

to farm more efficiently. Before they were able to ride horses, humans had to cross land on foot. Riding horses

allowed people to travel far greater distance in much less time. That encouraged populations living in different

areas to interact with one another. The new form of rapid transportation helped cultures spread around the

world.

1. Before domestication horses were _____.

A. caught for sports

B. hunted for food

C. made to pull ploughs

D. used to carry people

2. The author uses the Shetland horse as an example to show _____.

A. it is smaller than the Clydesdale horse

B. horse used to have gentle personalities

C. some horses have better shaped than others

D. horses were of less variety before domestication

3. Horses contributed to the spread of culture by _____.

A. carrying heavy loads

B. changing farming methods

C. serving as a means of transport

D. advancing agriculture in different areas

4. The passage is mainly about _____.

A. why humans domesticated horses

B. how humans and horses needed each other

C. why horses came in different shapes and sizes

D. how human societies and horses influenced each other

下列物质合成时，不需要氮源的是（）

A.三磷酸腺苷

B.蛋白质

C.脂肪

D.核酸