1、【题目】The Native American interpreter Sacajawea was a valuable member of the Lewis and dark expedition in 1805.
选项：
A.veryfriendly
B.veryuseful
C.verythoughtful.
D.verywealthy
答案：
B
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】The economy of Dallas, Texas, is strong and diversified .
选项：
A.inflated
B.stable
C.varied
D.well-regulated
答案：
C
解析：
暂无解析
1、【题目】Anoversight遗漏(miss,overslaugh)inproofreadingoftenresultsinprintederrors.
选项：
A.Aninconsistency
B.Adiscrimination
C.Ablotch
D.Aninattention
答案：
解析：
1、【题目】The controls of most modern airplanes can be operated either manually or automatically.
选项：
A.bythebook
B.byamap
C.bylogic
D.byhand
答案：
D
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
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