学生的主体性最主要地体现在（）。A． 自觉性 B．独立性 C． 创造性 D．

传统的5类线电缆只能将以太网电信号传输（）。

A.100m

B.150m

C.250m

D.1000m

E

“You will remember this night forever,” he told me. My friend was taking me dumpster(垃圾桶)diving for the first time. We both needed costumes for a party so he decided to show me around a few of the city’s finest waste baskets. After finding costume materials in the thrift store(旧货店)dumpsters, we stopped at a grocery store. There we found a dumpster half filled with potatoes and bread. We collected bags of potatoes to share with friends and to use for cooking with Food Not Bombs(a group that shares free vegetarian food and speaks against war and poverty). I was later told that using the dumpsters could earn me the title of an urban pirate(海盗)-what a great honour!  

My first dumpster dive opened new doors for me. I had struggled with spending money. Now I think it will prove difficult to buy anything after seeing what people throw away. Something about all those wasted resources is not right. It seems we are constantly buying more and more and throwing away perfectly usable items, while many cannot meet their basic needs.

People who have never done their shopping in a dumpster believe it is dirty, dangerous, and humiliating. In reality, a diver with an old pair of jeans, a flashlight and a little common sense (wear boots and gloves to guard against sharp objects)should not have any trouble staying safe and can feel good about being a resourceful and responsible consumer. Dumpstering is a good way to save money, labour, and lessen our environmental impact.

From that dumpster tour, I had a new opinion on garbage. I found I can do something in this wasteful society. By living simply and taking what little I need from others’ unwanted goods, I am able to begin to break the habits of wastefulness. The influence of that first urban pirate adventure created a continuing impact on my life.

72. What is the attitude of the author to the title of an urban pirate?

A. Tolerant          B. Proud         C. Respectful        D. Humiliating

73. “My first dumpster dive opened new doors for me.” means          .

A. it has led to a better life for me and made me wealthier

B. it has made me buy nothing later and break the habits of wastefulness

C. it has changed my views and attitudes to consumers and living

D. it has brought me good senses to be a responsible and a resourceful consumer

74. The main idea of the third paragraph is             .

A. only the poor goes in for dumpstering

B. how to keep safe while dumpstering

C. the benefit and value of dumpstering  

D. how to save money and lessen environmental impace

75. In the writer’s opinion,          .

A. there are many objects to be recycled in the dumpster

B. there are too many people looking down upon the divers

C. the little of an urban pirate is a prejudice

D. the influence of the first urban pirate adventure had an ill effect on his life  

进出口货物报关单是海关对进出口货物进行监管、征税、统计和展开稽查、调查的重要依据，是加工贸易进出口货物核销、出口货物退税和外汇管理的重要凭证，也是查处进出口货物走私、违规的重要的书面依据。 ( )

对载重线标志中的圆圈、线段和字母，当船舷为暗色底者应漆成：（）

①、红色；

②、白色；

③、黄色

A.①、③

B.①、②

C.①、②、③

D.②、③

地面某线段的坡度可用该线段坡度角的（）值以百分比形式表示

A.正弦

B.余弦

C.正切

D.余切