1、【题目】The Salk vaccine is a major factor in the fight to eradicate polio.

选项：

A.completelydestroy

B.carefullydisguise

C.sustain

D.contain

答案：

A

解析：

暂无解析

1、【题目】In literature, caricatures讽刺画 usually contain verbal exaggeration through which the writer achieves comic and often satiric 讽刺effects.

选项：

A.banter取笑(tease)

B.humor

C.interaction

D.overstatement

答案：

D

解析：

暂无解析

1、【题目】How many people are aware that a dancer with the New York City Ballet typically wears out a minimum of two hundred pairs of toe shoes per year?

选项：

A.only

B.exactly

C.atleast

D.fewerthan

答案：

C

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】Someseaurchins海胆havevenomous(toxin)spines

选项：

A.sensuous(feeling)

B.crooked(twisted)

C.poisonous

D.sticky

答案：

解析：