TOEFL / Reading practice / Section CDTW
Read in Daily Life

Read a text message chain.

Maya Torres (4:12 P.M.): Are you still in the computer lab? I think I left my calculator on the table by the window. Jonah Reed (4:14 P.M.): Just walked out. The door locks automatically after 4, so I can't get back in. Maya Torres (4:15 P.M.): Oh no. I have my statistics quiz at 9 tomorrow morning. Jonah Reed (4:16 P.M.): Dr. Patel unlocks the lab at 8:30, but that's cutting it close. You can borrow mine tonight if you want. I don't need it until Thursday. Maya Torres (4:17 P.M.): You're a lifesaver! I'll stop by your place after dinner.
31. Why does Jonah mention that the door locks automatically?