1 . A medical emergency can happen anywhere at any time. Taking a brief moment to seek help is often the best first response. But before an ambulance can get to the scene, the immediate first aid attendance to anyone who is injured seriously makes a difference between life and death. Life Saver Team has been providing CPR (心肺复苏术) and first aid training since 2009. Here are a few of their most popular courses:

CPR AED

It is a classroom video-based, instructor-led course that teaches the basic techniques of CPR and the use of an AED (自动体外除颤器), as well as how to relieve choking. This course teaches skills with research proven techniques.

●Course length: 2 hours

●Price: $50 (Sign up for a first aid course for an additional $30)

Upon completion of this course, students will receive an American Heart Association Heart Saver Fist Aid Course Completion Card that is valid (有效的) for two years.

Basic Life Support

This is a classroom course designed to provide a wide variety of healthcare professionals with the ability to recognize several life-threatening emergencies, provide CPR, and relieve choking in a timely and effective manner.

●Course length: 4 hours

●Price: $60 (Sign up for a first aid course for an additional $30)

The American Heart Association BLS for Healthcare Provider Course Completion Card is valid for two years.

First Aid

It is a classroom, video-based, instructor-led course that teaches students critical skills to manage an emergency in the first few minutes until emergency medical services arrive. Students learn skills such as how to treat bleeding, broken bones and other first aid emergencies.

●Course length: 2 hours

●Price: $45

Upon completion of this course, students will receive an American Heart Association Heart Saver CPR AED Course Completion Card that is valid for two years.

1. What should be often done first in a medical emergency?

A．Providing professional first aid.	B．Asking for help at once.
C．Taking the injured to the hospital.	D．Leaving the scene as soon as possible.

2. How much does it cost if a person wants to learn about CPR and AED?

A．$50.

B．$30.

C．$60.

D．$45

3. What do the listed courses have in common?

A．They are available online.

B．They are for all individuals.

C．They take the same amount of time.

D．They include a two-year AHA certificate.