The frame needs to be strong enough to sup
已帮助 人
The frame needs to be strong enough to support the engine.
A: bottom B: surface C: top D: structure
-
答案：D
题干意为“这个框架要足够结实以便支撑引擎。”句中划线词为名词，意为“框架，结构”。D项structure意为“构造，结构”，例句：Doctors study the structure of the human body．医生们研究人体构造。A项意为“底部”,B项意为“表面”,C项意为“顶部，顶端”，故选D项。