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】In 1974 Henry Aaron broke Babe Ruth's monumental lifetime record of 714 home runs.

选项：

A.archaic(old,antique)

B.degrading(discredit)

C.outstanding

D.entire

答案：

C

解析：

暂无解析

1、【题目】Despite the proliferation of other faster modes of transportation, the railroads remain the largest carriers of intercity freight in the United States.

选项：

A.schemes

B.means

C.tracks

D.variables

答案：

B

解析：

暂无解析

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】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】Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.

选项：

A.schemes

B.means

C.tracks

D.variables

答案：

解析：

1、【题目】Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.

选项：

A.obligations

B.qualities

C.links

D.needs

答案：

解析：

1、【题目】Bats fly, rather than glide, and thus are the only mammals capable of true flight.

选项：

A.straight

B.safe

C.real

D.rapid

答案：

C

解析：

暂无解析

1、【题目】With lasers scientists can probe many physical processes, such as combustion, once beyond our ken.视野

选项：

A.understanding

B.responsibility

C.interpretation

D.notice

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】ThecompanyissuesanannualreporteveryMarch.

选项：

A.ayearly

B.acomprehensive

C.afinancial

D.aproduct

答案：

解析：

1、【题目】Somechildrendisplayanunquenchable难以抑制的curiosityabouteverynewthingtheyencounter.

选项：

A.insatiable贪的无厌的

B.inherent

C.indiscriminate不加选择的

D.incredible

答案：

解析：