1、【题目】Someseaurchins海胆havevenomous(toxin)spines

选项：

A.sensuous(feeling)

B.crooked(twisted)

C.poisonous

D.sticky

答案：

解析：

1、【题目】In1861itseemedinevitablethattheSouthernstateswouldbreakawayfromtheUnion.

选项：

A.strange

B.certain

C.inconsistent

D.proper

答案：

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】HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?

选项：

A.only

B.exactly

C.atleast

D.fewerthan

答案：

解析：

1、【题目】The first important exposition in the United States was held in Philadelphia in 1876.

选项：

A.exhibition

B.concert

C.excursion

D.contest

答案：

A

解析：

暂无解析

1、【题目】Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.

选项：

A.straight

B.safe

C.real

D.rapid

答案：

解析：

1、【题目】ThefuturesurvivalofthebaldeagleisstillanimportantAmericanecologicalconcern.

选项：

A.migration

B.population

C.existence

D.evolution

答案：

解析：