In an appropriate communication model between a sender and a receiver．all the following statements are correct EXCEPT：

A:Noise should be minimize B:Receiver must decode and reply back to the messag C:Receiver should acknowledge and agree with the message sent by the sende D:Sender must choose right way to send the message

Under normal conditions the act of communication requires the presence of at least two persons: one who sends and one who receives the communication. In order to communicate thoughts and feelings, there must be a conventional system of signs or symbols which mean the same to the sender and the receiver.
The means of sending communications are too numerous and varied for a systematic classification; therefore, the analysis must begin with the means of receiving communication. Reception of communication is achieved by our senses. Sight, hearing, and touch play the most important roles. Smell and taste play very limited roles, for they cannot receive intellectual expression from fully developed systems of signs and symbols.
Examples of visual communication are gesture and mimicry. Although both frequently accompany speech, there are systems that rely solely on sight such as those used by deaf and dumb persons. Another means of communicating visually is by signals of fire, smoke, flags, of flashing lights. Feelings may be simply communicated by touch, such as by handshaking or backslapping, although a highly developed system of hand stroking has enabled blind, deaf, and dumb persons to communicate intelligently. Whistling to someone, applauding in a theater, and other forms of communication by sound rely upon the ear as a receiver. The most fully developed form of auditory communication is, of course, the spoken language.
The means of communication mentioned so far have two features in common: they last only a short time, and the person involved must be relatively close to each other. Therefore all are restricted in time and space.
Which of the following statements about the ways of communicating ideas and feelings mentioned in the passage is FALSE

A:They can be used to communicate over long distances. B:They involve use of conventional signs and symbols. C:They require both a sender and a receiver. D:They utilize the senses for reception.

Text 4

Which of the following statements about the ways of communicating ideas and feelings mentioned in the passage is FALSE

A:They can be used to communicate over long distances. B:They involve use of conventional signs and symbols. C:They require both a sender and a receiver. D:They utilize the senses for reception.

Passage Four
In order to communicate thoughts and feelings, there must be a conventional system of signs or symbols which mean the same to the sender and the receiver.
The means of receiving communications are too numerous and varied for systematic classification; therefore, the analysis must begin with the means of receiving communication. Reception of communication is achieved by our senses. Sight, heating, and touch play the most important roles.
Example of visual communication are gesture and mini-cry. Although both frequently accompany speech, there are systems that rely solely on sight, such as those used by deaf and dumb persons. Another means of communicating visually is by signals of fire, smoke, flags or flashing lights. Feeling may be simply communicated by touch, such as handshaking , although a highly developed system of handshaking has enabled blind, deaf, and dumb persons to communicate intelligently. Whistling to someone, applauding in a theater, and other forms of communication by sound rely upon the ear as a receiver. The most fully developed form of auditory communication is, of course, the spoken language.
The means of communication mentioned so far have two feature in common; they last only a short time, and the persons involved must be relatively close to each other. Therefore all are restricted in time and space.

Which of the following statements about the ways of communicating ideas and feelings mentioned in the passage is false（）

A:They can be used to communicate over long distances. B:They require both a sender and a receiver. C:They involve use of conventional signs and symbols. D:They utilize the senses for reception.

The usual way to ensure reliable delivery is to provide the (16) with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special (17) frame bearing positive or negative (18) about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the frame has arrived safely.On the other hand, a negative acknowledgement means that something has gone wrong, and the frame must be transmitted again. An additional complication comes from the possibility that hardware troubles may cause a frame to (19) completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame and then waits for an acknowledgement, positive or negative, will hang forever if a frame is ever lost due to, for example, (20) hardware.

（16）是（）

A:receiver B:controller C:sender D:customer

The usual way to ensure reliable delivery is to provide the (20) with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special (21) flame bearing positive or negative (22) about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the frame has arrived safely. On the other hand, a negative acknowledgement means that’ something has gone wrong, and the frame must be transmitted again.
An additional complication comes from the possibility that hardware troubles may cause a flame to (23) completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame and then waits for an acknowledgement, positive or negative, will hang forever if a frame is ever lost due to, for example, (24) hardware.

（20）是（）

A:receiver B:controller C:sender D:customer

The usual way to ensure reliable delivery is to provide the (71) with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special (72) flame bearing positive or negative (73) about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the frame has arrived safely. On the other hand, a negative acknowledgement means that’ something has gone wrong, and the frame must be transmitted again.
An additional complication comes from the possibility that hardware troubles may cause a flame to (74) completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame and then waits for an acknowledgement, positive or negative, will hang forever if a frame is ever lost due to, for example, (75) hardware.

（71）处应填（）。

A:receiver B:controller C:sender D:customer

The usual way to ensure reliable delivery is to provide the （71） with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special （72） frame bearing positive or negative （73） about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the the frame has arrived safely. On the other hand, a negative acknowledgement means that something has gone wrong, and the frame must be transmitted again. An additional complication comes from the possibility that hardware troubles may cause a frame to （74） completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame and then waits for an acknowledgement, positive or negative, will hang forever if a frame is ever lost due to, for example, （75） hardware.。

A:receiver B:controller C:sender D:customer

The usual way to ensure reliable delivery is to provide the (71) with some feedback about what is happening at the other end of the line. Typically, the protocol calls for the receiver to send back special (72) frame bearing positive or negative (73) about the incoming frames. If the sender receives a positive acknowledgement about a frame, it knows the the frame has arrived safely. On the other hand, a negative acknowledgement means that something has gone wrong, and the frame must be transmitted again.
An additional complication comes from the possibility that hardware troubles may cause a frame to (74) completely. In this case, the receiver will not react at all, since it has no any reason to react. It should be clear that a protocol in which the sender transmits a frame and then waits for an acknowledgement, positive or negative, will hang forever if a frame is ever lost due to, for example, (75) hardwareo

A:receiver B:controller C:sender D:customer