The frame needs to be strong enough to support the engine.

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问题 The frame needs to be strong enough to support the engine.

选项 A、bottom
B、surface
C、top
D、structure

答案D

解析 题意:这个框架要足够结实以便支撑引擎。划线词为名词,意为“框架,结构”。A项意为“底部”,例:He had worked in the theatre for many years,starting at the bottom.他从最基础的做起,已经从事戏剧工作很多年了。B项意为“表面”,例:Ozone forms a protective layer between 12 and 30 miles above the Earth’ssurface.臭氧在距地球表面12至30英里的地方形成一个保护层。C项意为“顶部,顶端”,例:The young man works his way up to the top.那个年轻人努力使自己晋升到最高职位。D项意为“构造,结构”,例:Doctors study the structure of the human body.医生们研究人体构造。故选D。
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