任务三 信息还原
阅读下面短文,从所给选项中选出能填入空白处的最佳选项,使短文通顺,结构完整,其中有一项是多余选项。

Have you ever heard of an AED? AED means Automated External Defibrillator. When someone's heart suddenly stops beating—an AED can restart it. (1)
Using an AED isn't as hard as many people think. Using it includes just a few simple steps. First, turn on the AED. It will provide both voice and visual instructions. (2) Make sure to place them where the AED shows. These pads allow the AED to check whether the heart is working well. Then, move away and don't touch the person until the AED gives another instruction. If the AED says "shock advised", make sure no one is touching the person, and then press the shock button. If not, follow the AED's instructions for CPR (chest compressions) until the doctors arrive.
(3) In schools, you can usually find it near the gym or the school office. In shopping malls, check the information desks. At airports, look for it on the walls.
(4)
AEDs are important because in cases of a sudden heart stop, every second counts.
(5) More and more places are getting AEDs, and more people are learning how to use them. This way, we can be ready to help if someone around us has a heart problem.
A. Next, put the sticky pads on the person's chest.
B. This small medical machine is truly a lifesaver.
C. Actually, you can find an AED in many public places.
D. With an AED, we can help save lives even before the doctors arrive.
E. It is usually marked with a heart symbol, making it easy to be found.
F. Many people still don't know why heart problems happen so suddenly.