每个产品能设置几个关键词？

Her father had found a(n)______for his ambition in his work.

A．escape

B．outlet

C．medium

D．impact

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幼儿期易发生意外伤害主要是由于

A、运动功能发育较快

B、语言功能发育较快

C、缺乏自我保护能力

D、平衡功能较差

E、以上都不是

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Thomas Edison spent years on his monumental inventions which brought light to human being. The underlined part means______.

A．historical

B．historic

C．sentimental

D．archaic

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关于核酸正确的叙述是

A、核酸的基本组成单位是核苷的磷酸脂

B、基本成分是磷酸、碱基和脱氧核糖

C、DNA无胸腺嘧啶和核糖

D、RNA无核糖和尿嘧啶

E、DNA和RNA的结构和功能都不同，但存在部位相同

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What can we know from the incident in Paragraph Four？

A．Dave Bing cancelled the construction of the statue due to budget problems.

B．Detroit"s financial situation has been largely improved.

C．Dave Bing responded too emotionally toward the project plan.

D．Whether cancelling the statue project is right or wrong is open to debate.

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