The students in high schools are_____to pass the basic computer test.A.turned B.requested C.kept D.required答案B.为什么不选D?

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The students in high schools are_____to pass the basic computer test.
A.turned B.requested C.kept D.required
答案B.为什么不选D?

汗啊,我也没弄清 到这看看

required是需要,含请求的意思
通过考试显然是强制性要求,用request