2010年，中国首次应用六炔基苯在铜片表面合成了石墨炔薄膜（其合成示意图如图所示），其特殊的电子结构将有望广泛应用于电子材料领域．下列说法不正确的是（　　）

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当我们上午上课的时候，英国的学生正在深夜睡梦中，原因是 (     )

根据短文选择正确答案。

    Li Ming is a middle school student. He is a good boy. Uncle Wu lives next to him. Uncle Wu has no child and can't see anything. He works in the factory near Li Ming's school. He goes to work at 7:30 in the morning and comes home at 4:30 in the afternoon. Li Ming walks to school at 8:00 in the morning and comes home at the same time as Uncle Wu in the afternoon. On weekdays, Li Ming gets up early to take Uncle Wu to the factory. After school he takes him home. On Sundays Li Ming helps Uncle Wu clean the house and do some cooking. Uncle Wu thanks Li Ming very much. He says, “Li Ming is a good boy. He is like my son. ”