The mother almost____when she learned that her son was shot dead.

The best title for the passage would be ________.

Passage 2

Questions 6 to 10 are based on the following passage:

The food we eat seems to have profound effects on our health. Although science has made enormous steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown tat 40 percent of cancer is related to the diet as well, especially cancer of the colon. Different cultures ate more prone to get certain illnesses because of the food that is characteristic in these cultures. That food is related to illness is not a new discovery. In 1945, government researchers realized that nitrates and nitrites, commonly used to preserve color in meats, and other food additives, caused cancer. Yet these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives that we eat are not all so direct. Farmers often give penicillin to beef and poultry, and because of this, penicillin has been found in the milk of treated cows. Sometimes similar drugs are administered to animals not for medicinal purposes, but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration (FDA) has tried repeatedly to control these procedures, the practices continue.

6. How has science done a disservice to mankind?

A. Because of science, most of the foods we eat today are contaminated.

B. It has caused a lack of information concerning the value of food.

C. As a result of scientific intervention, some potentially harmful substances has been added to our food.

D. The scientists have preserved the color of meats, but not of vegetables.

7. What are nitrates used for?

A. They preserves flavor in packaged foods.

B. They preserve the color of meats.

C. They are the objects of research.

D. They cause the animals to become fatter.

8. The FDA has tried repeatedly to control .

A. the attempt to fatten the animals

B. the attempt to cure sick animals

C. the using of drugs to animals

D. the using of additives to preserve the dolor of food

9. The word “carcinogenic” means most nearly the same as .

A. trouble-making B. color-retaining

C. money-saving D. cancer-causing

10. Which of the following statements is NOT true?

A. Drugs are always given to animals for medical reasons.

B. Some of the additives in our food are added to the food itself and some are given to the living animals.

C. Researchers have known about the potential hazards of the food additives for over thirty-five years.

D. Food may cause forty percent of cancer in the world.

ThediscoveryoftheAntarcticnotonlyprovedoneofthemostinterestingofallgeographicaladventures,butcreatedwhatmightbecalled“theheroicageofAntarcticexploration”.Bytheirtremendousheroism,mensuchasShakleton,Scott,andAmundsencausedanewcontinenttoemergefromtheshadows,andyetthatheroicage,littlemorethanacenturyold,isalreadypassing.Modernscienceandinventionsarerevolutionizingtheendurance,futurejourneysintotheseicywasteswillprobablydependonmotorvehiclesequippedwithcaterpillartractionratherthanonthedogsthatearlierdiscoverersfoundsoinvaluableandhardlycomparable.

FewrealizethatthisAntarcticcontinentisalmostequalinsizetoSouthAmerica,andenormousfieldofworkawaitsgeographersandprospectors.Thecoastsofthiscontinentremaintobeaccuratelycharted,andthemapingofthewholeoftheinteriorpresentsaformidabletasktothecartographerswhoundertakethework.Oncetheirlaborsarecompleted,itwillbepossibletoprospectthevastnaturalresourceswhichscientistsbelievewillfurnishoneofthelargesttreasurehoardsofmetalsandmineralstheworldhasyetknown,andalmostinexhaustiblesourcesofcopper,coal,uranium,andmanyotheroreswillbecomeavailabletoman.SuchdiscoverieswillusherinaneraofpracticalexploitationoftheAntarcticwastes.

Thepolardarknesswhichhidesthiscontinentforthesixwintermonthswillbedefeatedbyhugebatteriesoflight,andmakepossibletheestablishingofair-fieldsforthefutureinter-continentalairservicesbymakingtheseareasaslightasday.Presentflyingrouteswillbecompletelychanged,fortheAntarcticrefuelingbaseswillmakeflightsfromAustraliatoSouthAmericacomparativelyeasyoverthe5,000milesjourney.

Theclimateisnotlikelytoofferaninsuperableproblem,fortheexplorerAdmiralByrdhasshownthattheclimateispossibleevenformencompletelyuntrainedforexpeditionsintothosefrozenwastes.Someofhispartiesweremenwhohadneverseensnowbefore,andyetherecordsthattheysurvivedtherigorsoftheAntarcticclimatecomfortably,sothat,providedthattheappropriateinstallationsaremade,wemayassumethathumanbeingsfromallcountriescouldlivetheresafely.Byrdevenaffirmsthatitisprobablythemosthealthyclimateintheworld,fortheintensecoldofthousandsofyearshassterilizethiscontinent,andrendereditabsolutelygermfree,withtheconsequencesthatordinaryandextraordinarysicknessanddiseasesfromwhichmansuffersinotherzoneswithdifferentclimatesarehereutterlyunknown.Thereexistnoproblemsofconservationandpreservationoffoodsupplies,forthelatterkeepindefinitelywithoutanysignsofdeterioration;itmayevenbethatlatergenerationswillcometoregardtheAntarcticasthenaturalstorehouseforthewholeworld.

Plansarealreadyonfoottosetuppermanentbasesontheshoresofthiscontinent,andwhatsofewyearsagowasregardedasa“deadcontinent”nowpromisestobeamostactivecenterofhumanlifeandendeavor.

1.WhendidmanbegintoexploretheAntarctic?

A.About100yearsago.

B.Inthiscentury.

C.Atthebeginningofthe19thcentury.

D.In1798.

2.Whatmusttheexplorersbe,eventhoughtheyhavemodernequipmentandtechniques?

A.Braveandtough

B.Stubbornandarrogant.

C.Well-likedandhumorous.

D.Stoutandsmart.

3.Themosthealthyclimateintheworldis___.

A.inSouthAmerica.

B.intheArcticRegion.

C.intheAntarcticContinent.

D.intheAtlanticOcean.

4.WhatkindofmetalsandmineralscanwefindintheAntarctic?

A.Magnetite,coalandores.

B.Copper,coalanduranium.

C.Silver,naturalgasanduranium.

D.Aluminum,copperandnaturalgas.

5.Whatisplannedforthecontinent?

A.Buildingdamsalongthecoasts.

B.Settingupseveralsummerresortsalongthecoasts.

C.Mappingthecoastandwholeterritory.

D.Settinguppermanentbasesonthecoasts.

Directions:

In thissection,you will hear two long conversations.At the end of each conversation, you will hear some questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. Then mark the corresponding letter on the Answer Sheet with a single line through the centre.

Questions 1 to 4 are based on the conversation you have just heard.

1、 A. The collection of precious metals.

B. A standard measuring weight unit.

C. The value of precious metals.

D. A new metric system of measurement.

2、 A. Checking the accuracy of scales.

B. Calculating the density ofmetals.

C.Observing humidity of atmosphere.

D.Measuring amounts of rainfall.

3、 A. It has been rusty. B. It was not scientific.

C. It was of low quality. D. It was out of date.

4、 A. It is very cheap. B. It is difficult to say.

C. It is too expensive. D. It is reasonable.

Questions 5 to 8 are based on the conversation you have just heard.

5、 A. She is busy writing a biological article.

B. She is busy with a program about endangered species.

C. She is busy reading some books on economics.

D. She is busy with two research papers.

6、 A. Some species are impossible to conserve.

B. People are less conscious of saving endangered species.

C. Funds are difficult to get to conserve endangered species.

D. It is difficult to determine which animals are endangered.

7、 A. The relatives of the tailed toad have been extinct.

B. The varieties of the tailed toad are helpful to the research ofevolution.

C.If the tailed toad is well conserved,many other species will be better saved.

D.If the tailed toad was extinct,some myth about evolution would lose.

8、 A. The man is busy preparing the research paper.

B. The woman should hand two papers in on the same day.

C. The man is reading a hook only about biology.

D. The woman is glad to make a decision on which animal to save.