Scatteredthroughtheseasoftheworldarebillionsoftonsofsmallplantsandanimalscalledplankton.Mostoftheseplantsandanimalsaretoosmallforthehumaneyetosee.Theydriftaboutlazilywiththecurrents,providingabasicfoodformanylargeranimals.Planktonhasbeendescribedastheequivalentofthegrassesthatgrowonthedrylandcontinents,andthecomparisonisanappropriateone.Inpotentialfoodvaluehowever,planktonfaroutweighsthatofthelandgrasses.Onescientisthasestimatedthatwhilegrassesoftheworldproduceabout49billiontonsofvaluablecarbohydrateseachyear.Thesea’splanktongeneratesmorethantwiceasmuch.
Despiteitsenormousfoodpotential,littleeffortwasmadeuntilrecentlytofarmplanktonaswefarmgrassesonland.Nowmarinescientistshaveatlastbeguntostudythispossibility,especiallyasthesea’sresourcesloomevenmoreimportantasameansoffeedinganexpandingworldpopulation.
Nooneyethasseriouslysuggestedthat“planktonburgers”maysoonbecomepopulararoundtheworld.Asapossiblefarmedsupplementaryfoodsource,however,planktonisgainingconsiderableinterestamongmarinescientists.
Onetypeofplanktonthatseemstohavegreatharvestpossibilitiesisatinyshrimplikecreaturecalledkrill.Growingtotwoorthreeincheslong,krillprovidethemajorfoodforthegiantbluewhale,thelargestanimalevertoinhabittheEarth.Realizingthatthiswhalemaygrow100feetandweigh150tonsatmaturity,itisnotsurprisingthateachonedevoursmorethanonetonofkrilldaily.
Krillswimaboutjustbelowthesurfaceinhugeschoolssometimesmileswide,mainlyinthecoldAntarctic.Becauseoftheirpinkcolor,theyoftenappearasasolidreddishmasswhenviewedfromashiporfromtheair.Krillareveryhighinfoodvalue.Apoundofthesecrustaceanscontainsabout460calories—aboutthesameasshrimporlobster,towhichtheyarerelated.
Ifthekrillcanfeedsuchhugecreaturesaswhales,manyscientistsreason,theymustcertainlybecontendersasnewfoodsourceforhumans.
1.Whichofthefollowingbestportraystheorganizationofthepassage?
A.Theauthorpresentstheadvantagesanddisadvantagesofplanktonasafoodsource.
B.Theauthorquotespublicopiniontosupporttheargumentforfarmingplankton.
C.Theauthorclassifiesthedifferentfoodsourcesaccordingtoamountofcarbohydrate.
D.Theauthormakesageneralstatementaboutplanktonasafoodsourceandthenmovestoaspecificexample.
2.Accordingtothepassage,whyisplanktonregardedtobemorevaluablethanlandgrasses?
A.Itiseasiertocultivate.
B.Itproducesmorecarbohydrates.
C.Itdoesnotrequiresoil.
D.Itismorepalatable.
3.Whydoestheauthormention“planktonburgers”?
A.Todescribetheappearanceofonetypeofplankton.
B.Toillustratehowmuchplanktonawhaleconsumes.
C.Tosuggestplanktonasapossiblefoodsources.
D.Tocomparethefoodvaluesofbeefandplankton.
4.Whatismentionedasoneconspicuousfeatureofkrill?
A.Theyarethesmallestmarineanimals.
B.Theyarepinkincolor.
C.Theyaresimilarinsizetolobsters.
D.Theyhavegrasslikebodies.
5.Theauthormentionsallofthefollowingasreasonswhyplanktoncouldbeconsideredahumanfoodsourceexceptthatitis___.
A.highinfoodvalue.
B.inabundantsupplyintheoceans.
C.anappropriatefoodforotheranimals.
D.freeofchemicalsandpollutants.
DBCBD
暂无解析
Part II Vocabulary and Structure
Directions: In this part there are forty incomplete sentences. Each sentence is followed by four choices. Choose the one that best completes the sentence and then mark your answer on the Answer Sheet.
21. The teacher the students on a tour through the art museum.
A. made B. indicated C. forced D. took
22. Tom’s parents died when he was a child, so he was by his relatives.
A. grown up B. brought up C. raised D. fed up
23. Here is my card. Let’s keep in .
A. touch B. relation C. connection D. friendship
24. So far there is no proof people from other planets do exist.
A. which B. how C. what D. that
25. The newspapers reported yesterday several on the boundaries of these two countries.
A. incidents B. happenings C. events D. accidents
26. We’ve worked out the plan and now we must put it into .
A. fact B. reality C. practice D. deed
27. He didn’t and so he failed the examination.
A. work enough hard B. hard work enough C. hard enough work D. work hard enough
28. Not until Mr. Smith came to China what kind of country she is.
A. he knew B. he didn’t know C. did he know D. he couldn’t know
29. Scientists say it may be ten years this medicine was put to use.
A. since B. before C. after D. when
30. In some countries, is called “equality” does not really mean equal rights for all people.
A. that B. what C. which D. how
31. We didn’t know his telephone number, otherwise we him.
A. would telephone B. would have telephone
C. had telephoned D. must have telephoned
32. We’ve missed the last bus, I’m afraid we have no but to take a taxi.
A. way B. possibility C. choice D. selection
33. Luckily, most sheep the flood last month.
A. endured B. survived C. lived D. passed
34. My parents always let me have my own of living.
A. way B. method C. manner D. fashion
35. Like other language skills, reading requires practice.
A. the most of B. much of the C. most of the D. more of the
36. It is only through practice one will be able to swim skillfully.
A. what B. who C. that D. which
37. The brain is capable of ignoring pain message of to concentrate on other activities.
A. it allowed B. is it allowed C. allowed D. allowed it
38. Don’t worry, I have already them the decision.
A. informed; with B. informed; of C. informed; for D. informed; that
39. The child was sorry his mother when he arrived at the station.
A. to miss B. having missed C. missing D. to have missed
40. I wonder why he to discuss the problem at the meeting.
A. declined B. rejected C. refused D. delayed
41. You can hang up what you like on these walls.
A. bare B. empty C. blank D. vacant
42. According to a , the majority would rather have newspapers without a government than a government without newspapers.
A. election B. campaign C. poll D. vote
43. The population of the village has decreased 150 to 500.
A. in B. at C. by D. with
44. It seems that there is that I can’t do.
A. nothing B. anything C. everything D. none
45. They are often caring more about animals than human beings.
A. accused if B. accused with C. charged of D. charged for
46. a good beginning is made, the word is half done.
A. As soon as B. While C. As D. Once
47. George could not his foolish mistake.
A. account in B. count on C. count for D. account for
48. We came into this field late, so we must work hard to the lost time.
A. make up for B. make out C. keep up with D. put up with
49. The new law will came into on the day it is passed.
A. effect B. use C. service D. existence
50. We can separate the mixture into the pure chemical compounds it is composed.
A. in which B. of what C. of which D. from which
51. Mrs. Lincoln has that she is unable to get a job.
A. such small education B. so little education
C. a such little education D. a so small education
52. She can’t prevent her little boy shooting birds.
A. from; to B. on; at C. with; up D. from; at
53. Many countries are increasing their use of natural gas, wind and other forms of .
A. energy B. source C. power D. material
54. A darkened sky in the daytime is usually and indication that a storm is .
A. possible coming B. about to take place
C. close by D. expected to be severe
55. We all know that speak louder than words.
A. movements B. performance C. operations D. actions
56. , he could not cover the whole distance in fifteen minutes.
A. Fast as he can B. As he can ran fast
C. If he can ran fast D. Since he ran fast
57. Agricultural production in that country has increased in recent years.
A. vastly B. strikingly C. considerably D. extremely
58. Peter has planned to some money every month so that he can buy a used car next year.
A. set aside B. set up C. set in D. set along
59. Although I spoke to him many times, he never took any of what I said.
A. attention B. notice C. warning D. observation
60. They overcame all the difficulties and fulfilled the plan three months ahead of time, is something we had not expected.
A. that B. what C. it D. which
Urbancongestionwouldgreatlyberelievedifthe____chargedonpublictransportweremorereasonable.
Most of us are taught to pay attention to what is said—the words. Words do provide us with some information, but meanings are derived from so many other sources that it would hinder our effectiveness as a partner to a relationship to rely too heavily on words alone. Words are used to describe only a small part of the many ideas we associate with any given message. Sometimes we can gain insight into some of those associations if we listen for more than words. We don’t always say what we mean or mean what we say. Sometimes our words don’t mean anything except “ I’m letting off some steam. I don’t really want you to pay close attention to what I’m saying. Just pay attention to what I’m feeling.” Mostly we mean several things at once. A person wanting to purchase a house says to the current owner, “This step has to be fixed before I’ll buy.” The owner says, “ It’s been like that for years.” Actually, the step hasn’t been like that for years, but the unspoken message is: “ I don’t want to fix it. We put up with it. Why can’t you?” The search for a more expansive view of meaning can be developed of examining a message in terms of who said it, when it occurred, the related conditions or situation, and how it was said.
When a message occurs can also reveal associated meaning. Let us assume two couples do exactly the same amount of kissing and arguing. But one couple always kisses after an argument and the other couple always argues after a kiss. The ordering of the behaviors may mean a great deal more than the frequency of the behavior. A friend’s unusually docile behavior may only be understood by noting that it was preceded by situations that required an abnormal amount of assertiveness. Some responses may be directly linked to a developing pattern of responses and defy logic. For example, a person who says “No!” to a serials of charges like “You’re dumb,” “You’re lazy,” and “You’re dishonest,” may also say “No!” and try to justify his or her response if the next statement is “And you’re good looking.”
We would do well to listen for how messages are presented. The words, “If sure has been nice to have you over,” can be said with emphasis and excitement or ritualistically. The phrase can be said once or repeated several times. And the meanings we associate with the phrase will change accordingly. Sometimes if we say something infrequently it assumes more importance; sometimes the more we say something the less importance it assumes.
1.Effective communication is rendered possible between two conversing partners, if ___.
A.they use proper words to carry their ideas.
B.they both speak truly of their own feelings.
C.they try to understand each other’s ideas beyond words.
D.they are capable of associating meaning with their words.
2.“I’m letting off some steam” in paragraph 1 means___.
A.I’m just calling your attention.
B.I’m just kidding.
C.I’m just saying the opposite.
D.I’m just giving off some sound.
3.The house-owner’s example shows that he actually means___.
A.the step has been like that for years.
B.he doesn’t think it necessary to fix the step.
C.the condition of the step is only a minor fault.
D.the cost involved in the fixing should be shared.
4.Some responses and behaviors may appear very illogical, but are justifiable if___.
A.linked to an abnormal amount of assertiveness.
B.seen as one’s habitual pattern of behavior.
C.taken as part of an ordering sequence.
D.expressed to a series of charges.
5.The word “ritualistically” in the last paragraph equals something done___.
A.without true intention.
B.light-heartedly.
C.in a way of ceremony.
D.with less emphasis.
In selecting a material, the engineer’s interest is in its properties，which determine how it will perform under the loads and condition____it is subject.
PartIVTranslation
Yetthesecarcinogenicadditivesremaininourfood,anditbecomesmoredifficultallthetimetoknowwhichthingsonthepackaginglabelsofprocessedfoodarehelpfulorharmful.(PassageTwo)
