解析：选D　细节理解题。根据第四、五段内容可知，Hunt让她的学生三四人一组鉴别真假消息。

　　26．According to Church, what should schools do?

　　A．Help students improve driving skills.

　　B．Teach students how to spot false news.

　　C．Allow students to drive on the highway.

　　D．Ask students to avoid using social media.

　　解析：选B　推理判断题。根据最后两段内容可知，Church认为学校屏蔽社交媒体的做法就像是在停车场教会学生们开车后让他们直接上高速，这样做无疑风险很大。由此可推测他反对学校屏蔽社交媒体的做法，而是希望学校能够教孩子们如何识别假新闻。

　　27．What does the text mainly discuss?

　　A．The findings of a recent Stanford study.

　　B．An educational issue in the digital age.

　　C．The influence of a widely spread post.

　　D．An experienced high school teacher.

　　解析：选B　主旨大意题。通读全文可知，本文讨论了在电子时代，老师如何帮助学生们学会鉴别网络消息的真假，这是一个教育问题。

　　C

　　(2018·北京东城综合练习)Our room was on the second floor but you could still hear the roar of the ocean and see the stars at night. I used to take long walks along the water. The food in town was wonderful and the people were very friendly. The area was very quiet and peaceful, and fairly deserted.

　　The last evening of our vacation, however, we all heard strange footsteps following closely behind us as we were walking up to our room in the holiday centre. We turned around and noticed a fairly young man moving very rapidly across the beach and getting closer to us. He was tall and wore a baseball cap. We couldn't see his face and he was approaching us very rapidly. The man's actions made my dad very nervous. Dad warned us that we'd better try to make it to our hotel room as quickly as possible. I didn't like my dad's voice. I could hear fear in it. It was late and we were all alone. We didn't have any cell phones on us. I never saw Dad as worried as he was then and I knew that something was terribly wrong. The sense of fear started to overwhelm Mom and me. We had had such a good time in town. Now, the night was rapidly turning into a dangerous situation.

We could hear the man's footsteps getting closer. Dad's face was almost pale. The