In may require long period of mechanical ventilation for ________.

A.you may have to fl in a long appliicationform

B.the fling up of an applic ation form. takes much time

C.one may have to fll in many applic ation forms before one gets ajob

D.application forms are usually ifcult to read and require good skills to fl in

disappears and recuperation begins. The tired mind gathers new energy, and the memory improves.

Some adults require little sleep; others need eight to ten hours in every twenty-four hours. Infants sleep sixteen to eighteen hours daily, the amount gradually diminishing as they grow older. Young students may need twelve hours; university students may need ten. A worker with a physically demanding job may also need ten, whereas an executive working under pressure may manage on six to eight. Many famous people have little sleep. Napoleon Bonaparte, Thomas Edison and Charles Darwin apparently averaged only four to six hours a night.

Whatever your individual need, you can be sure that by the age of thirty you will have slept for a total more than twelve years. By the age you will also have developed a sleep routine: a favorite hour, a favorite position, and a rule you need to follow in order to rest comfortably.

Investigators have tried to find out how long a person can go without sleep. Several people have reached more than 115 hours nearly five days. Whatever the limit, it is absolute. Animals kept awake for from five to eight days have died of exhaustion. The limit for human beings is probably about a week.

(1).By writing this passage, the writer intends to tell us that _______.

A、sleep is important for good mental and physical health

B、a light sleep is as restful as a deep sleep

C、memory is improved during sleep

D、sleep is relatively unimportant for human beings

(2).The amount of the sleep required may ___.

A、tire an individual mind

B、help infants grow older

C、apply pressure on an executive

D、that they didn’t sleep long

(3).If a person is not allowed to follow his own sleep routine, he will probably _____.

A、never fall sleep

B、not sleep well

C、lost his memory

D、begin to daydream

(4).The author implies that if human beings are kept awake for more than a week the result _____.

A、is hard to imagine

B、will probably be a mental breakdown

C、is difficult to describe

D、will probably be dead

(5).From the amount of sleep Napoleon, Edison, Darwin required, we can conclude ___.

A、 that they were famous

B、 that they were executives

C、 hat they were intelligent

D、 that they didn’t sleep long

Border Gateway Protocol(BGP) is inter-autonomous system (71) protocol. BGP is based on a routing method called path vector routing. Distance vector routing is not a good candidate for inter-autonomous system routing because there are occasions on which the route with the smallest (72) count is not the preferred route. For example, we may not want a packet through an not secure even though it is the shortest route. Also, distance vector routing is unstable due to the fact that the routers announce only the number of hop counts to the destination without actually defining the path that leads to that (73) ．A router that receives a distance vector advertisement packet may be fooled if the shortest path is actually calculated through the receiving router itself. Link (74) routing is also not a good candidate for inter-autonomous system routing because an Internet is usually too big for this routing method. To use link state routing for the whole internet would require each router to have a huge link state database. It would also take a long time for each router to calculate its rousting (75) using the Dijkstra algorism.

（71）

A. routing

B. switching

C. transmitting

D. receiving

（72）

A. path

B. hop

C. route

D. packet

（73）

A. connection

B. window

C. source

D. destination

（74）

A. status

B. search

C. state

D. research

（75）

A. table

B. state

C. metric

D. cost

●Border Gateway Protocol(BGP) is inter-autonomous system (71) protocol. BGP is based on a routing method called path vector routing. Distance vector routing is not a good candidate for inter-autonomous system routing because there are occasions on which the route with the smallest (72) count is not the preferred route. For example, we may not want a packet through an not secure even though it is the shortest route. Also, distance vector routing is unstable due to the fact that the routers announce only the number of hop counts to the destination without actually defining the path that leads to that (73) ．A router that recevives a distance vector advertisement packet may be fooled if the shortest path is actually calculated through the receiving router itself. Link (74) routing is also not a good candidate for inter-autonomous system routing because an Internet is usually too big for this routing method. To use link state routing for the whole internet would require each routex to have a huge link state database. It would also take a long time for each router to calculate its rousting (75) using the Dijkstra algorism.

（71）

A. routing

B. switching

C. transmitting

D. receiving

(72)

A. path

B. hop `

C. route

D. packet

(73）

A. connection

B. window

C. source

D. destination

(74)

A. status

B. search

C. state

D. research

(75）

A. table

B. state

C. metric

D. cost

A.Acquire

B.Inquire

C.Require

D.request

()the testimony of other witnesses, our arbitral tribunal may require the retirement of any witness or witnesses.

A、During of

B、At times

C、In the period of

D、During for

Although people engage in play mainly to enjoy themselves，play also 16 the physical and mental health of individuals. Many people increase their physical 17 by swimming or hiking. Many people also improve their mental ability by playing word games or 18 puzzles.

Play activities 19 one of three general groups. Motor play is physical exercise, such as skating or playing volleyball. Intellectual play primarily 20 mental activity, as in playing chess. Sensory play includes spectator activities, such as attending sports events.

Play takes countless forms. A person may bounce a ball 21 or join in a game of basketball with several other people. Play activity may or may not be planned ahead of time. It can take place 22 from in an individual’s mind to areas designed 23 for play, such as athletic fields.

Some play activities are popular with both children and adults. Others appeal primarily 24people of certain age groups. Children often 25 plays that require a great deal of imagination, such as dressing up and 26 to be adults. Adult play activities generally require more structured types of recreation, such as sports and games.

For a child, playing is a form. of 27 and a significant part of social development. Through playing, they express their ideas, moods, and personalities to other people. Babies only a few months old begin to play, 28 they can communicate effectively with words. Children learn to interact with one another by sharing toys. When they are older, they develop more teamwork skills by playing 29 in such games as volleyball.

For an adult, playing is 30 relaxing during leisure time. Play activities can help relieve pressures caused by the tensions of daily life.

16.A. brings out B. contributes to

C. depends on D. accounts for

17.A. soundness B. readiness

C. fairness D. fitness

18.A. solving B. settling

C. clearing D. answering

19.A. deal with B. begin with

C. fall into D. break into

20.A. reflects B. neglects

C. resolves D. involves

21.A. skillfully B. personally

C. alone D. hard

22.A. sometime B. anytime

C. somewhere D. anywhere

23.A. singularly B. specifically

C. specially D. uniquely

24.A. to B. for

C. on D. at

25.A. keep pace with B. take part in

C. make fun of D. set foot on

26.A. pretending B. contending

C. intending D. attending

27.A. self-confidence B. self-defense

C. self-expression D. self-esteem

28.A. no later than B. long before

C. soon after D. as soon as

29.A. cooperatively B. collectively

C. independently D. individually

30.A. an introduction to B. an insight into

C. a result of D. a way of

What is the author's view of "instant" scientific discoveries？

A．They occur with long intervals.

B．They occur in quick succession for a long period.

C．They require long periods of time to be confirmed.

D．They are never made easily, but through long years of intense work and persistence.

A.contiguous zones

B.the territorial sea

C.coastal sea

D.sea lanes and traffic separation schemes