题目内容

Dolphins' brains are particularly well-developed to ______.

A. help them to travel fast in water
B. arrange sounds in different structures
C. respond to different kinds of sound
D. communicate with humans through sound

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Most Americans surveyed believe that preschools should also attach importance to ______.

A. problem solving
B. group experience
C. parental guidance
D. individually-oriented development

资本市场的特点是( )。

A. 偿还期短、流动性强、风险小
B. 偿还期短、流动性小、风险高
C. 偿还期长、流动性小、风险高
D. 偿还期长、流动性强、风险小

One of the stands ______ and dozens of people were either killed or injured.

A. destroyed
B. collapsed
C. corroded
D. ruined

根据《民法通则》，下列关于民事法律行为的表述，不正确的是( )。

A. 无效的民事行为，从行为开始时就没有法律约束力
B. 被撤销的民事行为，从行为开始起无效
C. 民事行为部分无效，不影响其他部分效力的，其他部分仍然有效
D. 显失公平的民事行为无效