根据《水质凯氏氮的测定》（GB／T11891--1989）测定水中凯氏氮含量，消解时

下列说法中正确的是（　　）

A．两腰对应相等的两个等腰三角形全等

B．面积相等的两个等腰三角形全等

C．能够完全重合的两个三角形全等

D．两个锐角对应相等的两个直角三角形全等

GPS是几个英文字母的缩写，其中文意思是（）

A、全球定位系统

B、全球监测系统

C、全球导航系统

D、全球卫星系统

Runners in a relay race pass a stick in one direction. However, merchants passed silk, gold, fruit, and glass along the Silk Road in more than one direction. They earned their living by traveling the famous Silk Road.

The Silk Road was not a simple trading network. It passed through thousands of cities and towns. It started from eastern China, across Central Asia and the Middle East, and ended in the Mediterranean Sea. It was used from about 200 BC to about 1300 AD, when sea travel offered new routes. It was sometimes called the world’s longest highway.

However, the Silk Road was made up of many routes, not one smooth path. They passed through what are now 18 countries. The routes crossed mountains and deserts and had many dangers of hot sun, deep snow and even battles. Only experienced traders could return safe.

The Silk Road got its name from its most prized product. Silk could be used like money to pay taxes or buy goods. But the traders carried more than just silk. Gold, silver, and glass from Europe were much found in the Middle East and Asia. Horses traded from other areas changed farming practices in China. Indian merchants traded salt and other valuable goods. Chinese merchants traded paper, which produced an immediate effect on the West. Apples traveled from central Asia to Rome. The Chinese had learned to graft (嫁接) different trees together to make new kinds of fruit.

They passed this science on to others, including the Romans. The Romans used grafting to grow the apple. Trading along the Silk Road led to world-wide business 2,000 years before the World Wide Web.

The people along the Silk Road did not share just goods. They also shared their beliefs. The Silk Road provided pathways for learning, diplomacy, and religion.

小题1:It’s probable that traders along the Silk Road needed ______.

A．to deal with a lot of difficulties

B．to know the making of products

C．to receive certain special training

D．to remember the entire trade route小题2:The Silk Road became less important because ______.

A．it was made up of different routes

B．silk trading became less popular

C．people needed fewer foreign goods

D．sea travel provided easier routes小题3:New technologies could travel along the Silk Road because people ______.

A．shared each other’s beliefs

B．learned from one another

C．traded goods along the route

D．earned their living by traveling小题4:What is the best title for the passage?

A．The Silk Road: Past and Present

B．The Silk Road: East Meets West

C．The Silk Road: Routes Full of Dangers

D．The Silk Road: Pathways for Learning

在整孔换铺轨枕或换铺轨排等作业时，必须对桥梁状态进行全面调查，对桥梁结构、承载力和稳定性进行检算。

下列属于轻症中暑症状的是( )

A．面色潮红

B．皮肤干热

C．体温在38℃以上

D．大量出汗后，突发腹部痉挛性疼痛

E．二便失禁