In this section, you will hear three news reports. At the end of each news report, you will hear two or three questions. Both the news report and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D).A、The devices might be very expensive.
B、The devices might be stolen when they are not at home.
C、The devices might be hacked and used by someone else.
D、The devices can’t be used when they are far away from home.