Which is the guided discovery method similar to in that the students are induced to discover rules by themselves？

l theories. ()

A．The deductive methoD

B．The inductive methoD

C．The guided discovery metho

D．The productive metho

D．

In the strength of the carrier signal is varied to represent binary 1 or 0.

(72) is a system that can map a name to an address and conversely an address to an name.

(73) is a three-way handshaking authentication protocol that it's packets are encapsulated in the point-to-point protocol

(74) is an approach that enables an ATM Switch to behave like a LAN switch.

(75) is an guided media which is made of glass or plastic and transmits signals in the form. of light.

A．ASK

B．PSK

C．FSK

D．FDM

In(66)the strength of the carder signal is varied to represent binary 1 or 0.(67)is a system that can map a name to an address and conversely an address to an name.(68)is a three-way handshaking authentication protocol that it's packets are encapsulated in the point-to-point protocol.(69)is an approach that enables an ATM Switch to behave like a LAN switch.(70)is an guided media which is made of glass or plastic and transmits signals in the form. of light.

A．ASK

B．PSK

C．FSK

D．FDM

In(66)the strength of the carrier signal is varied to represent binary 1 or 0.(67)is a system that can map a name to an address and conversely an address to an name.(68)is a three -way handshaking authentication protocol that it's packets are encapsulated in the point - to -point protocol.(69)is an approach that enables an ATM Switch to behave like a LAN switch.(70)is an guided media which is made of glass or plastic and transmits signals in the form. of light.

A．FDM

B．DSK

C．FCK

D．ASK

● (71) In the strength of the carrier signal is varied to represent binary 1 or 0．

(72) is a system that can map a name to an address and conversely an address to an name．

(73) is a three-way handshaking authentication protocol that it's packets are encapsulated in the point-to-point protocol

(74) is an approach that enables an ATM Switch to behave like a LAN switch．

(75) is an guided media which is made of glass or plastic and transmits signals in the form. of light．

(71) A．ASK

B．PSK

C．FSK

D．FDM

(72) A．NAT

B．NCP

C．DDN

D．DNS

(73) A．PPP

B．PAP

C．CHAP

D．LCP

(74) A．VLAN

B．LANE

C．VPN

D．IPOA

(75) A．Coaxial cable

B．Optical fiber

C．Unshielded Twisted-pair Cable

D．Shielded Twisted-pair Cable

onditions or those of the world at large. They find themselves born into a certain place in【2】, and they accept what each day【3】, without any thought beyond what the immediate present requires. They seek the【4】of the needs of the moment, without much forethought, and【5】thinking that by sufficient effort the conditions of their lives【6】be changed. A certain percentage, guided by personal ambition,【7】the effort of thought and will which is necessary to place themselves among the more fortunate members of the community; but very【8】among these are seriously concerned to secure for all the advantages which they seek for【9】. Only a few rare and exceptional men have that kind of love toward【10】at large that makes them unable to endure patiently the general mass of evil and suffering,【11】of any relation it may have to their own lives. These【12】, driven by sympathetic pain, will seek for some new system of society by which life may become richer, more full of【13】and less full of preventable evils【14】it is at present. But in the past such men have, as a rule, failed to interest the very victims of the injustices【15】they wished to remedy.

(1)

A．if

B．either

C．when

D．both

hing found in nature or made by man. There are museums devoted to art, science, history, industry, and technology. But museums are no longer just storehouses for collections. Today nearly all museums, large or small, carry on educational programs. Museums offer guided tours, lectures, films, music recitals (独唱的), art lessons, and other attractions.

Museums work constantly to improve their collections and ways of displaying them. All museums are always on the watch for new additions to their collections. Works of art are bought from art dealers and private collectors or at auction (拍卖) sales. Museums also accept gifts and bequests (遗物), but the large museums no longer accept everything that is offered to them. They accept only objects or collections that meet their high standards.

What is to be gained from visiting museums？ Museum exhibits can teach us about the world in which we live--the materials it is made of, the trees and plants that cover it, and the animals that have lived on it since its beginning. We can learn about the activities of man--his history and development and his accomplishments in arts and crafts.

Most men and women pass （21) life without ever considering or criticizing （22) their o

wn conditions or those of the world at large. They find themselves born into a certain place in society, and they accept what each day (23) , without any thought beyond what the immediate present requires. They seek the satisfaction of the needs of the moment, without much forethought, and without thinking that by sufficient effort the conditions of their lives (24) be changed. A certain percentage, guided by personal ambition, make the effort of thought and will which is necessary to place themselves among the more (25) members of the community; but very few among these are seriously concerned to secure for all the advantages which they seek for (26) . Only a few rare and exceptional men have that kind of love toward mankind at large that makes them unable to endure patiently the general mass of evil and suffering, (27) of any relation it may have to their own lives. These few, driven by sympathetic pain, will seek for some new system of society by which life may become richer, more full of (28) and less full of preventable evils (29) it is at present. But in the past such men have, as a rule, failed to interest the very victims of the injustices (30) they wished to remedy.

21.A.out

B.at

C.through

D.above

22.A.if

B.either

C.when

D.both

23.A.was

B.finishes

C.brings

D.is missing

24.A.could

B.must

C.would

D.had better

25.A.numerous

B.innocent

C.honest

D.fortunate

26.A.him

B.them

C.themselves

D.anyone

27.A.despite

B.regardless

C.because

D.on account

28.A.problems

B.themselves

C.excuses

D.joy

29.A.than

B.which

C.although

D.when

30A.who

B.which

C.where

D.whom