1、【题目】Themegaphone(microphone)makesthevoicesoundlouderbecauseitpointssoundwavesinonedirectionandkeepsthemfromspreadingoutinalldirections.

选项：

A.slithering

B.radiating

C.interfering

D.murmuring

答案：

解析：

1、【题目】In 1861 it seemed inevitable that the Southern states would break away from the Union.

选项：

A.strange

B.certain

C.inconsistent

D.proper

答案：

B

解析：

暂无解析

1、【题目】While Billie Holiday did not invent the music called "the blues", she most assuredly helped popularize it.

选项：

A.finally

B.certainly

C.earnestly

D.enthusiastically

答案：

B

解析：

暂无解析

1、【题目】Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.

选项：

A.obligations

B.qualities

C.links

D.needs

答案：

解析：

1、【题目】People who do not sleep enough tend to become irritable .

选项：

A.easilyannoyed

B.ill

C.weary

D.stiffandsore

答案：

A

解析：

暂无解析

1、【题目】Blue－green algae grow abundantly in salt marshes.

选项：

A.primarily

B.slowly

C.onplants(cultivate)

D.ingreatnumbers

答案：

D

解析：

暂无解析

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】Some children display an unquenchable 难以抑制的 curiosity about every new thing they encounter.

选项：

A.insatiable贪的无厌的

B.inherent

C.indiscriminate不加选择的

D.incredible

答案：

A

解析：

暂无解析

1、【题目】ThefuturesurvivalofthebaldeagleisstillanimportantAmericanecologicalconcern.

选项：

A.migration

B.population

C.existence

D.evolution

答案：

解析：

1、【题目】Somecosmeticsmanufacturersattempttocapturetherose'sunmistakablefragrance香味insoapsandperfumes.

选项：

A.design

B.texture

C.scent

D.freshness

答案：

解析：

1、【题目】TheNativeAmericaninterpreterSacajaweawasavaluablememberoftheLewisanddarkexpeditionin1805.

选项：

A.veryfriendly

B.veryuseful

C.verythoughtful.

D.verywealthy

答案：

解析：