【题目】According to the latest BBC news, a five-year-old boy from England _______ the youngest computer specialist in the world．
A．became B．becomes
C．had become D．has become
在线课程【答案】D
【解析】本题考查时态。根据the latest news，和 youngest两个最高级，我们可以得知这个男孩是有史以来最年轻的计算机专家，只有现在完成时可以体现这一状态，所以选D。