3D films are not new,they first__________in 1903

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3D films are not new,they first__________in 1903
A appear B appeared C have appeared D had appeared请问这道题怎么做还有就是用什么方法做的

答案：B
翻译：3D电影并不新鲜,他们在1903年就首次出现了.
1.句子的时间状语是in 1903年,是一个非常明显的过去时间状语.
这要求句子一般只能使用一般过去时,所以答案为B.
2.A apear 是一般现在时,强调经常性习惯性的动作或状态,不妥；
C 为现在完成时,强调延续到现在或对现在的影响,不妥；
D 为过去完成时,强调一个发生在另一个过去动作或时间之前的动作（即“过去的过去”）,但是本题除了本身的时间状语in 1903外,根本没有另外一个可做参照物的时间或动作,排除.
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