Ever since I arrived here, I ______ in the dormitory because it is cheaper. A) lived

A.since

B.as

C.that

D.which

A、go into

B、go out

C、go to

D、go around

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.

A．receiver

B．controller

C．sender

D．customer

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.

（71）

A. receiver

B. controller

C. sender

D. customer

（72）

A. data

B. control

C. request

D. session

（73）

A. application

B. connection

C. stream

D. acknowledgement

（74）

A. vanish

B. vary

C. appear

D. incline

（75）

A. acting

B. working

C. malfunctioning

D. functioning

A hundred years ago, before all these devices were invented, if a person wanted to entertain himself with a song or a piece of music, he would have to do the singing himself or pick up a violin and play it. Now, all he has to do is turn on the radio or TV. As a result, singing and music have declined.

Italians used to sing all the time. Now, they only do it in Hollywood movies, Indian movies are mostly a series of songs and dances trapped around silly stories. As a result, they don't do much singing in Indian villages anymore. Indeed, ever since radio first came to life, there has been a terrible decline in amateur (业余的) singing throughout the world.

There are two reasons for this sad decline. One, human beings are astonishingly lazy. Put a lift in a building, and people would rather take it than climb even two flights of steps. Similarly, invent a machine that sings, and people would rather let the machine sing than sing themselves. The other reason is that people are easily embarrassed. When there is a famous, talented musician readily available by pushing a button, which amateur violinist or pianist would want to try to entertain family or friends by himself？

These earnest reflections came to me recently when two CDs arrived in the mail. They are historic recordings of famous writers reading their own works. It was thrilling to hear the voices from a long dead past in the late 19th century. But today, reading out loud anything is no longer common. Today, we sing songs to our children until they are about two, we read simple books to them till they are about five, and once they have learnt to read themselves, we become deaf. We're alive only to the sound of the TV and the stereo (立体声音响).

I count myself extremely lucky to have been born before TV became so common: I was about six before TV appeared. To keep us entertained my mother had to do a good deal of singing and tell us endless tales. It was the same in many other homes. People spoke a language; they sang it, they recited it; it was something they could feel.

Professional actors' performance is extraordinarily revealing. But I still prefer my own reading, because it's mine. For the same reason, people find karaoke (卡拉OK) liberating. It is almost the only electronic thing that gives them back their own voice. Even if their voices are hopelessly out of tune, at least it is meaningful self-entertainment.

The main idea of this passage is that ______.

A．TV and radio can amuse us with beautiful songs and music

B．TV and radio prevent us from self-entertainment

C．people should sing songs and read books aloud themselves

D．parents should sing songs and read books aloud to their children

Sadly, students have told me that as soon as people finally reach the point of marriage, "true love dies". I disagree. It is not the end of true love, but the beginning of realistic love. I have been married for 21 years in a cross-cultural marriage. Despite the difficulties of such marriage, I love my wife now more than ever before. But that does not mean my emotions are always the same as when I first fell in love. As a matter of fact, love is more than emotion; it's both a decision and a commitment(承诺，奉献).

True love must include making a self sacrificial(自我牺牲的) commitment to always work for another person's good. I like to think that falling in love is like a match lighting a candle. It can start a love relationship. But it doesn't "hold a candle" to the true lifelong realistic commitment that makes true love last for life. Unlike a candle, true love will not grow tired and eventually bum out, but will grow ever deeper throughout a lifetime.

People in love usually can't ______ their idealization of their lover from the reality.

A．separate

B．connect

C．depend on

D．think

A.came, accepted

B.come, unacceptable

C.arrived, accepting

D.arrive, acceptable

A.since

B.while

C.that

D.when