1. (2020高二上·丰台期末) 阅读理解

    Basic Steps of CPR Everyone Should Know

    Do you know how to offer first aid if a person has an accident and stops breathing but there is no doctor available at hand? Applying CPR is usually helpful when emergencies such as a heart attack occurs. Read this CPR guide now so you know what to do if someone is experiencing a life-threatening (威胁生命) emergency.

    Step 1. Position your hands.

    Make sure the patient is lying on his back on a firm surface. Kneel beside him and place your hand on the center of the chest. Keep your arms straight, cover the first hand with the other hand and interlock (紧扣) the fingers of both hands together. Keep your fingers raised so they do not touch the patient's chest.

    Step 2.       .

    Push the breastbone up and down to a depth of about 5 cm about 30 times, at a rate of 100 beats per minute.

    Step 3. Give rescue breaths.

    Make sure the airway is open, and pinch (捏) the nose so it closes. Gently raise the chin (下巴) upwards with two fingers of your other hand. Take a deep breath, put your mouth over the patient's, and blow until you can see his chest, rise. Then remove your mouth from the patient's and look along the chest, watching the chest fall. To get another breath, lift your head and breathe in deeply. Perform Step 3 again.

    Step 4. Repeat chest compressions (按压) and rescue breaths.

    Repeat the 30 chest compressions followed by the two breaths about five times, and then check for normal breathing. If that person is not breathing normally, continue performing CPR. If breathing restarts as normal, stay with the injured person until help arrives.

    First aid is an important life skill that everyone should learn. The more people who learn CPR, the more lives can be saved in the future.

1. （1） We should do CPR at once, when someone ________.

   A . suffers an accident and stops breathing B . is hit by a car and can't move C . is suffering a serious headache D . has a serious bleeding
3. （2） Which of the following should be put in Step 2?

   A . Interlock the fingers B . Open the airway C . Press the chest D . Start the breath
5. （3） Which picture describes the underlined statement in Para. 4?

   A . B . C . D .
7. （4） The author writes this passage to _______.

   A . describe the dangerous experience B . encourage people to care for others C . show the damage of a heart attack D . explain the steps to apply CPR