【題目】There is another _______to this problem which you__________

A. boundary , don’t mention B. reflection , didn’t mention

C. target , hadn’t mentioned D. dimension , haven’t mentioned

【答案】D

【解析】考查名詞辨析及時(shí)態(tài)。句意：這個(gè)問(wèn)題還有另外一個(gè)方面（dimension）你沒(méi)有提到。從定語(yǔ)從句的意思可知是這個(gè)方面現(xiàn)在你沒(méi)有提到，對(duì)現(xiàn)在有影響就是你下面要提到，所以本句要用現(xiàn)在完成時(shí)。一般過(guò)去時(shí)對(duì)現(xiàn)在沒(méi)有影響，過(guò)去完成時(shí)是過(guò)去的過(guò)去。boundary分界線(xiàn)；范圍；邊線(xiàn)。reflection反映； 思考；反射；映像。target目標(biāo); 目的；對(duì)象；靶子。dimension尺寸；面積，范圍，度，維。故選D項(xiàng)。

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