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友情链接：
A
Although made fifteen years ago, the machine is still in perfect working order.
B
Although having been made fifteen years ago, the machine be in perfect working order.
C
Although it had been made fifteen years ago, the machine has been in perfect working order.
D
Although it is made fifteen years ago, the machine is still being in perfect working order.
正确答案 ：A
解析
A项：is still in perfect working order意为“仍然状态良好”。在although引导的让步状从中，当主从句的主语相同，且从句含有be动词时，从句可省略主语和be动词。句意“这台机器虽然是15年前造的，但仍然运转良好。”符合题意，故选A。
B项：the machine后的be动词形式错误，应改为is，且漏译“仍然”。不符合题意，故排除。
C项：时态使用错误，主句应用一般现在时，从句应用一般过去时。不符合题意，故排除。
D项：增译being。不符合题意，故排除。
故本题答案为A。
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