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】Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.

选项：

A.schemes

B.means

C.tracks

D.variables

答案：

解析：

1、【题目】A mythical(imaginary) creature, the dragon was believed to have lion's claws, scaly skin, and fiery breath.

选项：

A.legendary

B.magical

C.frightening

D.perplexing

答案：

A

解析：

暂无解析

1、【题目】One of the greatest breakthroughs for professional women came in 1973 when the field of banking opened up for them.

选项：

A.mostseriousdisappointments

B.mostsignificantadvances

C.mostabruptdeclines

D.mostcrucialsituations

答案：

B

解析：

暂无解析

1、【题目】TheNativeAmericaninterpreterSacajaweawasavaluablememberoftheLewisanddarkexpeditionin1805.

选项：

A.veryfriendly

B.veryuseful

C.verythoughtful.

D.verywealthy

答案：

解析：

1、【题目】ThefuturesurvivalofthebaldeagleisstillanimportantAmericanecologicalconcern.

选项：

A.migration

B.population

C.existence

D.evolution

答案：

解析：

1、【题目】Some animals pant and sweat to speed evaporation of body moisture and thus cool themselves.

选项：

A.wiggle摆动slowly

B.breathequickly

C.rest

D.perspire

答案：

D

解析：

暂无解析

1、【题目】The company issues an annual report every March.

选项：

A.ayearly

B.acomprehensive

C.afinancial

D.aproduct

答案：

A

解析：

暂无解析

1、【题目】Alllivingorganisms,regardlessoftheiruniqueidentity,havecertainbiological,chemical,andphysicalcharacteristicsincommon.

选项：

A.asaresultof

B.considering

C.cognizantof(consciousof,awareof)

D.whatever

答案：

解析：

1、【题目】Food must be moist in order to have a taste.

选项：

A.appetizing(delicious)

B.nutritious

C.damp

D.chewed

答案：

C

解析：

暂无解析

1、【题目】Oneofthegreatestbreakthroughsforprofessionalwomencamein1973whenthefieldofbankingopenedupforthem.

选项：

A.mostseriousdisappointments

B.mostsignificantadvances

C.mostabruptdeclines

D.mostcrucialsituations

答案：

解析：