题目

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中选出最佳选项。I firstheard about several cases of coronavirus(冠状病毒) infection in January, but I did not expect the outbreak to affect the rest ofthe world. Starting in March, it was1that we should take all thefinal exams online. It was unexpected, and all university staff and students were2.Due to the disease, mostof the school events have been3to be held online. I have had a lot more4time than before. To5time,I learned to follow recipes(食谱)to make6dishes. The period of quarantine (隔离) has 12．如图所示的四种现象中，属于光的直线传播形成的是（　　）A．竹的倒影B．碗中的筷子C．林中的树影D．镜中的陶罐