B
新素材 When someone's heart suddenly stops, we can use an AED to save him or her. It can be found in public places and it is easy to use. Turn it on and follow the voice instructions. Here are some key steps.

1. Place one pad onto the upper-right chest (胸部). Place the other onto the lower-left chest.
2. Connect the pads to the AED.
3. Don't touch the patient! Wait for the result of the examination.
4. Press the button when a shock is advised.
5. Give CPR(心肺复苏) if needed.
Remember: It's best to treat the patient within the "Golden 4 Minutes"! Time matters! If an AED is not around, send someone to get one and give CPR while waiting. Don't forget to call 120.
1. When is an AED used?
A. When someone's heart suddenly stops.
B. When someone has a headache.
C. When someone's back suddenly hurts.
D. When someone has a toothache.
2. 新考法·图文转换题 Where should the pads be placed on the patient?

3. What's the golden time to use an AED?
A. The first 4 minutes.
B. The first 5 minutes.
C. The first 6 minutes.
D. The first 7 minutes.

B
【解题导语】 本文主要介绍了自动体外除颤器(AED)的相关科普知识。
1 A 细节理解题。根据第一段中的“When someone's heart suddenly stops, we can use an AED to save him or her”可知,应选 A。
2 D 图文转换题。根据方框中的“1. Place one pad onto the upper-right chest(胸部). Place the other onto the lower-left chest”可知,一个贴片放在病人的右上胸部,另一个贴片放在病人的左下胸部。故 D 项符合题意。
3 A 细节理解题。根据最后一段中的“It's best to treat the patient within the 'Golden 4 Minutes'! Time matters!”可知,应选 A。