1、【题目】The future survival of the bald eagle is still an important American ecological concern.

选项：

A.migration

B.population

C.existence

D.evolution

答案：

C

解析：

暂无解析

1、【题目】ThefirstimportantexpositionintheUnitedStateswasheldinPhiladelphiain1876.

选项：

A.exhibition

B.concert

C.excursion

D.contest

答案：

解析：

1、【题目】The fear of smallpox, which terrorized the eighteenth century, has no analogy(likeness) today.

选项：

A.occurrence

B.remnants残留物

C.witnesses

D.parallel

答案：

D

解析：

暂无解析

1、【题目】Blue－greenalgaegrowabundantlyinsaltmarshes.

选项：

A.primarily

B.slowly

C.onplants(cultivate)

D.ingreatnumbers

答案：

解析：

1、【题目】Double Eagle in the first transatlantic balloon, was greeted by avid crowds in France.

选项：

A.eager

B.surging

C.appreciative

D.vigorous

答案：

A

解析：

暂无解析

1、【题目】Creamoftartar酒石,aweakacid,canbeaddedtoeggwhitestohelpthemfoam泡沫whentheyarebeaten

选项：

A.whipped

B.aged

C.boiled

D.cracked

答案：

解析：

1、【题目】Urban renewal programs strive to upgrade areas that are becoming slums.

选项：

A.reproach

B.improve

C.fortify

D.uproot

答案：

B

解析：

暂无解析

1、【题目】Alligators still exist in some of the dank 潮湿 swamps and bayous小海湾 of Alabama's coastal regions.

选项：

A.weirdly古怪的fascinating

B.mythical

C.drab(monotonous)

D.unpleasantlyhumid

答案：

D

解析：

暂无解析

1、【题目】Insect pests are among the leading causes of crop failure.

选项：

A.expected

B.chief

C.natural

D.least

答案：

B

解析：

暂无解析

1、【题目】Although the Carbon 14 method of dating old objects is not foolproof , it is the best method available at present

选项：

A.whollyoperational

B.entirelyserviceable

C.fullyreliable

D.completelysafe

答案：

C

解析：

暂无解析

1、【题目】Whencarbonisaddedtoironintheproperproportions,theresultissteel.

选项：

A.container

B.sequence

C.laboratories

D.amounts

答案：

解析：

1、【题目】HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?

选项：

A.only

B.exactly

C.atleast

D.fewerthan

答案：

解析：

1、【题目】WhileBillieHolidaydidnotinventthemusiccalled"theblues",shemostassuredlyhelpedpopularizeit.

选项：

A.finally

B.certainly

C.earnestly

D.enthusiastically

答案：

解析：

1、【题目】How many people are aware that a dancer with the New York City Ballet typically wears out a minimum of two hundred pairs of toe shoes per year?

选项：

A.only

B.exactly

C.atleast

D.fewerthan

答案：

C

解析：

暂无解析