供应链是围绕核心企业，通过对企业的信息流、物流和资金流进行的控制，从而形成一个整体的网链结构。

The Roman roads at first were built for ______.

A．connecting the cities within the country

B．moving soldiers and weapons around

C．transporting goods within the country

D．amusing travelers and traders

The Roman roads at first were built for ______.

A．connecting the cities within the country

B．moving soldiers and weapons around

C．transporting goods within the country

D．amusing travelers and traders

s reflected light could be seen several miles away. The enemy did not know what the flashes meant, but other Greek soldiers could understand the messages. [14]Roman soldiers in some places built long rows of signal towers. When they had a message to send, the soldiers shouted it from tower to tower. If there were enough towers and enough soldiers with loud voices, important news could be sent quickly over distance.

[16]In Africa, people learned to send messages by beating on a series of large drums. Each drum was kept within hearing distance of the next one. The drum beats were sent out in a special way that all the drummers understood. Though the messages were simple, they could be sent at great speed for hundreds of miles.

In the eighteenth century, [15]a French engineer found a new way to send short messages. In this way, a person held a flag in each hand and the arms were moved to various positions representing different letters of the alphabet. It was like spelling out words with flags and arms.

Over a long period of time, people sent messages by all these different ways. [17]However, not until the telephone was invented in America in the nineteenth century could people send speech sounds over a great distance in just a few seconds.

According to this passage, the Roman soldiers mainly depended upon ______to send their messages.

A．fine weather

B．signal towers

C．the spelling system

D．arm movements

send, the soldiers shouted it from tower to tower. If there were enough towers and enough soldiers with loud voices, important news could be sent quickly over distance.

In Africa, people learned to send messages by beating on a series of large drums (鼓). Each drum was kept within hearing distance of the next one. The drum beats were sent out in a special way that all the drummers understood. Though the messages were simple, they could be sent at great speed for hundreds of miles.

In the eighteenth century, a French engineer found a new way to send short messages. In this way, a person held a flag in each hand and the arms were moved to various positions representing different letters of the alphabet (字母表). It was like spelling out words with flags and arms.

Over a long period of time, people sent messages by all these different ways. However, not until the telephone was invented in America in the nineteenth century could people send speech sounds over a great distance in just a few seconds.

According to this passage, the Roman way of communication depended very much on______.

A．fine weather

B．high tower

C．the spelling system

D．arm movements

Greek soldiers sent messages by turning their shields (盾) toward the sun. The flashes reflected light could be seen several miles away. The enemy did not know what the flashes meant, but other Greek soldiers could understand the messages.

Roman soldiers in some places built long rows of signal towers. When they had a message to send, the soldiers shouted it from tower to tower. If there were enough towers and enough soldiers with loud voices, important news could be sent quickly over distance.

In Africa, people learned to send messages by beating on a series of large drums (鼓). Each drum was kept within hearing distance of the next one. The drum beats were sent out in a special way that all the drummers understood. Though the messages were simple, they could be sent at great speed for hundreds of miles.

In the eighteenth century, a French engineer found a new way to send short messages. In this way, a person held a flag in each hand and the arms were moved to various positions representing different letters of the alphabet. It was like spelling out words with flags and arms.

Over a long period of time, people sent messages by all these different ways. However, not until the telephone was invented in America in the nineteenth century could people send speech sounds over a great distance in just a few seconds.

According to this passage, the Roman way of communication depended very much upon______.

A．fine weather

B．high tower

C．the spelling system

D．arm movements

es.

A. fine weather

B. signal towers

C. the spelling system

D. arm movements

A tunnel built in a castle is______.

A．a secret passage for the king and, queen to get out of the castle to live an ordinary life

B．a secret passage for soldiers to attack the enemy from their back

C．a secret passage for the king and queen to swim in the moat and play the chase-and-hide game in the forest

D．a secret passage for the king and queen to escape when the castle was captured

C Greek soldiers sent messages by turning their shields(盾)toward the sun. The flashes reflected light could be seen several miles away. The enemy did not know what the flashes meant, but other Greek soldiers could understand the messages.

Roman soldiers in some places built long rows of signal towers. When they had a message to send, the soldiers shouted it from tower to tower. If there were enough towers and enough soldiers with loud voices, important news could be sent quickly over distance.

In Africa, people learned to send messages by beating on a series of large drums(鼓). Each drum was kept within hearing distance of the next one. The drum beats were sent out in a special way that all the drummers understood. Though the messages were simple, they could be sent at great speed for hundreds of miles.

In the eighteenth century, a French engineer found a new way to send short messages. In this way, a person held a flag in each hand and the arms were moved to various positions representing different letters of the alphabet. It was like spelling out words with flags and arms.

Over a long period of time, people sent messages by all these different ways. However, not until the telephone was invented in America in the nineteenth century could people send speech sounds over a great distance in just a few seconds.

第45题：According to this passage, the Roman way of communication depended very much upon .

[A] fine weather

[B] high tower

[C] the spelling system

[D] arm movements

CGreek soldiers sent messages by turning their shields (盾) toward the sun. The flashes reflected light could be seen several miles away. The enemy did not know what the flashes meant, but other Greek soldiers could understand the messages.

Roman soldiers in some places built long rows of signal towers. When they had a message to send, the soldiers shouted it from tower to tower. If there were enough towers and enough soldiers with loud voices, important news could be sent quickly over distance.

In Africa, people learned to send messages by beating on a series of large drums (鼓). Each drum was kept within hearing distance of the next one. The drum beats were sent out in a special way that all the drummers understood. Though the messages were simple, they could be sent at great speed for hundreds of miles.

In the eighteenth century, a French engineer found a new way to send short messages. In this way, a person held a flag in each hand and the arms were moved to various positions representing different letters of the alphabet. It was like spelling out words with flags and arms.

Over a long period of time, people sent messages by all these different ways. However, not until the telephone was invented in America in the nineteenth century could people send speech sounds over a great distance in just a few seconds.

第65题：According to this passage, the Roman way of communication depended very much upon.

[A] fine weather

[B] high tower

[C] the spelling system

[D] arm movements

The house was built in ________ of a Roman villa.

A imagination

B recitation

C imitation

D interpretation