不按照upstream bandwidth map规定的时隙进行发光的ONU称为流氓ONU，流氓ONU的出现会影响其他ONU的数据发送。（）

在ONU上的ADSL模式下，使用display line operation portid命令查询用户端口的实际激活速率“Actual line rate downstream/upstream”是否达到要求。()

此题为判断题(对，错)。

MANAGED BETWEEN AS A. E-MAIL SHOULD BE CAREFULLY (62)______TO AVOID UNCLEAR AND INAPPROPRIATE COMMUNICATION

B. IS KNOWN (63)______SPAMMING

C. THIS TOPIC IS HOTLY DEBATED (64)______EXPERIENCED INTERNET USERS AND NEWCOMERS ELECTRONIC MAIL HAS BEEN IN WIDESPREAD USE FOR MORE THAN A DECADE, SIMPLIFYING THE FLOW OF IDEAS, CONNECTING PEOPLE FROM DISTANT OFFICES AND ELIMINATING THE NEED FOR MEETINGS , BUT (65)______. AS TIME GOES ON AND MORE PEOPLE SURF THE NET, THE AMOUNT OF UNSOLICITED E-MAIL GROWS. SOME FOLKS REASONABLY ASSUME THAT CYBERSPACE MIRRORS MANY ASPECTS OF OTHER FORMS OF COMMUNICATIONS. IT WOULD SEEM THAT SINCE TELEMARKETING AND DIRECT MAIL ARE SUCCESSFULLY USED AS MARKETING TECHNIQUES FOR MANY BUSINESSES, IT SHOULD FOLLOW THAT DIRECT E-MAIL OR UNSOLICITED E-MAIL SHOULD ALSO WOR

K. (66)______. UNLIKE RECEIVING PROMOTIONAL MATERIALS THROUGH THE MAIL OR OVER THE PHONE, E-MAIL DOES CARRY A COST TO THE RECIPIENT. "BANDWIDTH" IS USED EVERY TIME WHEN AN E-MAIL MESSAGE IS SENT AND PLACES A LOAD ON EXISTING RESOURCES. THE PROCESS OF SENDING UNSOLICITED E-MAIL TO LARGE, UNTARGETED LISTS, OR THROUGH MAILING LIST DISCUSSION GROUPS OR USENET NEWSGROUPS, (67)______. SPAMMING WASTES BANDWIDT

H. IMAGINE IF IT BECAME COMMON PRACTICE FOR BUSINESSES TO MARKET THIS WAY. NOT ONLY WOULD IT BE ANNOYING FOR MANY, THE LOAD ON THE SYSTEM WOULD TRANSLATE TO HIGHER ACCESS FEES. UNLIKE REGULAR MAIL WHERE THE SENDER PAYS THE COST OF DELIVERING THE MAIL, E-MAIL IS CHEAP TO SEND, AND IN SOME CASES, EXPENSIVE TO RECEIV

E.

【T7】

A.MANAGED

B.BETWEEN

C.AS A.E-MAIL SHOULD BE CAREFULLY【T7】______TO AVOID UNCLEAR AND INAPPROPRIATE COMMUNICATION

B.IS KNOWN【T8】______ "SPAMMING"

C.THIS TOPIC IS HOTLY DEBATED【T9】______EXPERIENCED INTERNET USERS AND NEWCOMERS ELECTRONIC MAIL HAS BEEN IN WIDESPREAD USE FOR MORE THAN A DECADE, SIMPLIFYING THE FLOW OF IDEAS, CONNECTING PEOPLE FROM DISTANT OFFICES AND ELIMINATING THE NEED FOR MEETINGS, BUT【T10】______.AS TIME GOES ON AND MORE PEOPLE SURF THE NET, THE AMOUNT OF UNSOLICITED E-MAIL GROWS.SOME FOLKS REASONABLY ASSUME THAT CYBERSPACE MIRRORS MANY ASPECTS OF OTHER FORMS OF COMMUNICATIONS.IT WOULD SEEM THAT SINCE TELEMARKETING AND DIRECT MAIL ARE SUCCESSFULLY USED AS MARKETING TECHNIQUES FOR MANY BUSINESSES, IT SHOULD FOLLOW THAT DIRECT E-MAIL OR UNSOLICITED E-MAIL SHOULD ALSO WOR

K.【T11】______. UNLIKE RECEIVING PROMOTIONAL MATERIALS THROUGH THE MAIL OR OVER THE PHONE, E-MAIL DOES CARRY A COST TO THE RECIPIENT."BANDWIDTH" IS USED EVERY TIME WHEN AN E-MAIL MESSAGE IS SENT AND PLACES A LOAD ON EXISTING RESOURCES.THE PROCESS OF SENDING UNSOLICITED E-MAIL TO LARGE, UNTARGETED LISTS, OR THROUGH MAILING LIST DISCUSSION GROUPS OR USENET NEWSGROUPS,【T12】______.SPAMMING WASTES BANDWIDT

H.IMAGINE IF IT BECAME COMMON PRACTICE FORBUSINESSES TO MARKET THIS WAY.NOT ONLY WOULD IT BE ANNOYING FOR MANY, THE LOAD ON THESYSTEM WOULD TRANSLATE TO HIGHER ACCESS FEES.UNLIKE REGULAR MAIL WHERE THE SENDER PAYS THE COST OF DELIVERING THE MAIL, E-MAIL IS CHEAP TO SEND, AND IN SOME CASES, EXPENSIVE TO RECEIV

E.

【T9】

A.MANAGED

B.BETWEEN

C.AS A.E-MAIL SHOULD BE CAREFULLY【T7】______TO AVOID UNCLEAR AND INAPPROPRIATE COMMUNICATION

B.IS KNOWN【T8】______ "SPAMMING"

C.THIS TOPIC IS HOTLY DEBATED【T9】______EXPERIENCED INTERNET USERS AND NEWCOMERS ELECTRONIC MAIL HAS BEEN IN WIDESPREAD USE FOR MORE THAN A DECADE, SIMPLIFYING THE FLOW OF IDEAS, CONNECTING PEOPLE FROM DISTANT OFFICES AND ELIMINATING THE NEED FOR MEETINGS, BUT【T10】______.AS TIME GOES ON AND MORE PEOPLE SURF THE NET, THE AMOUNT OF UNSOLICITED E-MAIL GROWS.SOME FOLKS REASONABLY ASSUME THAT CYBERSPACE MIRRORS MANY ASPECTS OF OTHER FORMS OF COMMUNICATIONS.IT WOULD SEEM THAT SINCE TELEMARKETING AND DIRECT MAIL ARE SUCCESSFULLY USED AS MARKETING TECHNIQUES FOR MANY BUSINESSES, IT SHOULD FOLLOW THAT DIRECT E-MAIL OR UNSOLICITED E-MAIL SHOULD ALSO WOR

K.【T11】______. UNLIKE RECEIVING PROMOTIONAL MATERIALS THROUGH THE MAIL OR OVER THE PHONE, E-MAIL DOES CARRY A COST TO THE RECIPIENT."BANDWIDTH" IS USED EVERY TIME WHEN AN E-MAIL MESSAGE IS SENT AND PLACES A LOAD ON EXISTING RESOURCES.THE PROCESS OF SENDING UNSOLICITED E-MAIL TO LARGE, UNTARGETED LISTS, OR THROUGH MAILING LIST DISCUSSION GROUPS OR USENET NEWSGROUPS,【T12】______.SPAMMING WASTES BANDWIDT

H.IMAGINE IF IT BECAME COMMON PRACTICE FORBUSINESSES TO MARKET THIS WAY.NOT ONLY WOULD IT BE ANNOYING FOR MANY, THE LOAD ON THESYSTEM WOULD TRANSLATE TO HIGHER ACCESS FEES.UNLIKE REGULAR MAIL WHERE THE SENDER PAYS THE COST OF DELIVERING THE MAIL, E-MAIL IS CHEAP TO SEND, AND IN SOME CASES, EXPENSIVE TO RECEIV

E.

【T8】

A.MANAGED

B.BETWEEN

C.AS A.E-MAIL SHOULD BE CAREFULLY【T7】______TO AVOID UNCLEAR AND INAPPROPRIATE COMMUNICATION

B.IS KNOWN【T8】______ "SPAMMING"

C.THIS TOPIC IS HOTLY DEBATED【T9】______EXPERIENCED INTERNET USERS AND NEWCOMERS ELECTRONIC MAIL HAS BEEN IN WIDESPREAD USE FOR MORE THAN A DECADE, SIMPLIFYING THE FLOW OF IDEAS, CONNECTING PEOPLE FROM DISTANT OFFICES AND ELIMINATING THE NEED FOR MEETINGS, BUT【T10】______.AS TIME GOES ON AND MORE PEOPLE SURF THE NET, THE AMOUNT OF UNSOLICITED E-MAIL GROWS.SOME FOLKS REASONABLY ASSUME THAT CYBERSPACE MIRRORS MANY ASPECTS OF OTHER FORMS OF COMMUNICATIONS.IT WOULD SEEM THAT SINCE TELEMARKETING AND DIRECT MAIL ARE SUCCESSFULLY USED AS MARKETING TECHNIQUES FOR MANY BUSINESSES, IT SHOULD FOLLOW THAT DIRECT E-MAIL OR UNSOLICITED E-MAIL SHOULD ALSO WOR

K.【T11】______. UNLIKE RECEIVING PROMOTIONAL MATERIALS THROUGH THE MAIL OR OVER THE PHONE, E-MAIL DOES CARRY A COST TO THE RECIPIENT."BANDWIDTH" IS USED EVERY TIME WHEN AN E-MAIL MESSAGE IS SENT AND PLACES A LOAD ON EXISTING RESOURCES.THE PROCESS OF SENDING UNSOLICITED E-MAIL TO LARGE, UNTARGETED LISTS, OR THROUGH MAILING LIST DISCUSSION GROUPS OR USENET NEWSGROUPS,【T12】______.SPAMMING WASTES BANDWIDT

H.IMAGINE IF IT BECAME COMMON PRACTICE FORBUSINESSES TO MARKET THIS WAY.NOT ONLY WOULD IT BE ANNOYING FOR MANY, THE LOAD ON THESYSTEM WOULD TRANSLATE TO HIGHER ACCESS FEES.UNLIKE REGULAR MAIL WHERE THE SENDER PAYS THE COST OF DELIVERING THE MAIL, E-MAIL IS CHEAP TO SEND, AND IN SOME CASES, EXPENSIVE TO RECEIV

E.

听力原文： To find out how the name Canada came about we must go back to the 16th century. At that time the French dreamed of discovering and controlling more land, of expanding trade beyond their borders and of spreading their faith across the world. In 1535, Francois I, King of France, ordered a navigator named Jacques Cartier to explore the New World and search for a passage to India.

Cartier first arrived at the Gulf of the St. Lawrence, which he wanted to explore. He did not know what to expect but he hoped that this Gulf was just an arm of the ocean between two islands, if it was, be would soon be on his way to the Far East. So he sailed upstream along the St. Lawrence River. However, instead of reaching Asia he arrived at Quebec or Stadacona, as the Indians called it. It was at this point that the term "Canada" entered the country's history. Apparently the word "Canada" came from an Indian word Kanata, which means community or village. Cartier first used it when he referred to Stadacona or Quebec. What a huge village Canada is!

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A．To build a new country.

B．To explore the New World.

C．To get in touch with the American Indians.

D．To know more about France.

当发现文件错误时，可以不按照文件执行。()

Section B

The annals of natural history contain many astonishing examples of the ability of animals to find their way home after making distant journeys. Salmon, for example, are born in freshwater streams and soon afterward journey down to sea. Several years later, after they have attained maturity, they swim back upstream to spawn and, in many cases, to die. The particular stream that serves as the journey's end is almost invariably the same one in which they were born. It is chosen out of dozens or hundreds of equally suitable streams. The expression "almost invariably" is used advisedly in this case. In one investigation by Canadian biologists, 469,326 young sockeye salmon were marked in a tributary of the Fraser River. Several years later almost 11,000 were recovered after they had completed a return journey to the very same stream, but not a single one was ever recovered from other streams nearby. What underwater guideposts can these fish possibly follow？ It has been discovered by A. D. Hasler and his associates at the University of Wisconsin that the salmon, like many other fish, have an acute sense of smell and are able tore member slight differences in the chemical composition of water. The most reasonable theory to explain salmon homing is that each individual remembers the distinctive "fragrance" of its native stream. As it moves upstream it makes the correct choice each time a new tributary is encountered, until finally it arrives home.

Long-distance migration is especially common in birds, because many species must make annual journeys between their nesting grounds and prime feeding areas far away. Each year over 100,000 sooty terns, an attractive tropical sea bird, travel from the waters off the west coast of Africa all the way across the Atlantic to Bush Key, a tiny island near the tip of Florida. Here they build their nests and breed. Once the young can fly, all journey back over the Atlantic. Why do the sooty terns migrate at all？ Like many other seabirds, they find protection from cats, foxes, and other predators on isolated islands. It is evidently safer for them to make an entire transoceanic voyage to reach one such haven than it would be to try to nest on the nearby African shores. A somewhat different reason lies behind the north-south migration of birds in the temperate zones. Each spring a legion of migratory forms, from robins, thrushes, and warblers to geese and ducks, makes its way north into the greening countryside, where large quantities of food are becoming freshly available. Working rapidly, they are able to rear one or more broods of young. As winter approaches and the food supply declines, all head south again. Some species proceed all the way to Central and South America. The record annual journey in the Western Hemisphere is made by the golden plover, one group of which travels from northern Canada to southern South America. A second group of the same species migrates from Alaska to Hawaii and the Marquesas Islands. Human beings could never make such journeys unaided by maps and navigational instruments. How do the birds do it？ A large part of the answer lies in their ability to use celestial clues. At migration time, caged starlings become unusually restless. If permitted to see the sun, they begin to fly toward the side of the cage that lies in the direction of their normal migration route. However, when the sky is overcast and the sun is obscured from view, their movements persist, but they are non directional. Other migratory birds fly at night and can evidently use the position of the stars to guide them. This surprising fact has been established by several biologists, including S. T. Emlen of Cornell University, who allowed a type of bird called indigo buntings to attempt flights under the artificial night sky of a planetarium. The birds oriented "correctly" with reference to the planetarium sky even when the positions of its constellations did not correspond with the position of the true constellations outside. Thus other outside influences were eliminated, and it could be concluded that the birds were able to orient to what they believed to be the position of the stars.

SUMMARY:

Animals are able to get back home after they make long journeys. Salmon, for example, are known to swim back several years later to【51】where they were born. What guide these fish upstream.9 According to scientists at the University of Wisconsin, salmon【52】and follow the fragrance of their native stream as they have a sharp【53】

Birds also make long distance migration each year. Sooty terns, a type of tropical sea bird, travel across the Atlantic from Africa to an island near Florida, where they breed and can【54】from predators. Birds also migrate in order to find food and rear their young. It is discovered that birds are aided by【55】to make distant journeys that even human beings cannot make without the assistance of navigational instruments.

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