1 . First aid is a crucial aspect of healthcare that can significantly save someone’s life or prevent further injury or illness. Knowing when to use first aid is essential so that proper measures are taken promptly.    1    

Injuries and Accidents

One of the most common instances where first aid is required is in injuries and accidents.    2     In such situations, it is essential to provide immediate care to prevent further damage and ensure that the affected individual receives timely medical attention. Some of the initial steps in first aid for injuries include applying pressure to stop bleeding, immobilizing the affected area, and administering pain relief medication.

Cardiac Arrest (心脏停跳)

Another critical situation where first aid can make a difference is during a cardiac arrest. A cardiac arrest occurs when the heart stops functioning; immediate intervention is necessary.     3     The first step in such a situation is to call emergency services and start cardiopulmonary resuscitation (CPR) until professional help arrives. Knowing how to perform CPR can be life-saving in such situations.

Choking and Suffocation (窒息)

Choking and suffocation are emergencies that can occur at any time, and immediate intervention is necessary to prevent further complications. If someone is choking, it is essential to act quickly.     4     Similarly, if someone is suffocating due to a blocked airway, it is vital to clear the obstruction and ensure that the person’s airway is open.

When to use first aid can significantly save someone’s life or prevent further injury or illness.    5     Call for emergency services, and provide immediate care until professional help arrives. Being prepared and trained in first aid can ensure the safety and well-being of those around us.

A．In any emergency, it is essential to remain calm.

B．This can include cuts, burns, falls, sprains, and other unpleasant injuries.

C．If someone has taken a poisonous substance, calling emergency services.

D．Perform the Heimlich manoeuvre to force out the object causing the obstruction.

E．Bleeding and overdose are medical emergencies that require immediate attention.

F．This blog post will discuss when to use first aid and the importance of early intervention.

G．Blood circulation (血液循环) and oxygen supply to vital organs should be restored immediately.

2 . The waterfall was coming. Curtis Newman, his wife Krystal Ramirez and his 13-year-old son Hunter thought they would jump out of their small boat into the water. But this year was different. Heavy snow and spring rains had turned the usually controllable waterfall into something fierce (凶猛的). As they approached the waterfall late on the afternoon of the third day of their camping trip, Newman could tell from the increasing roar of water in the narrow canyon (峡谷) that they were in trouble. There was no way they’d be able to move down the rocks on either side of the waterfall.

There was no cell phone service, and they hadn’t seen a single person in the past three days. As he wondered what to do, Newman heard voices coming from the other side of the waterfall. “We have to get those people a message, he thought. He picked up a stick and pulled out his pocketknife to carve” Help on it. He tried tossing it over the waterfall, but it floated away in the wrong directions. Krystal reminded him that he had a pen and paper in his backpack (背包). Newman knew it was an impossible attempt, but he wrote “6-15-19 We are stuck here @ the waterfall. Help please” and put the note into a bottle. This time, he threw the bottle over the waterfall successfully.

It took them about 30 minutes to go back to the beach where they had lunch. By about 10: 30 pm, they pulled out their sleeping bags. Then, just after midnight, they heard a helicopter hovering (盘旋) above them. Newman turned to his son and started shaking him.

They got rescued. “The rescuers said that they had been performing these kinds of rescues, but no one had ever been rescued by a message in a bottle,” Newman said.

1. Why was this year different?

A．The waterfall was more dangerous.

B．The weather conditions were as usual.

C．The canyon became extremely narrow.

D．The family lost control of the small boat.

2. What does the underlined word “tossing” in Paragraph 2mean?

A．Putting.

B．Rowing.

C．Hanging.

D．Throwing.

3. What can we infer from Newman’s words in the last paragraph?

A．Newman was proud of himself.

B．One of the rescuers found the bottle.

C．The rescuers were quite experienced.

D．Newman’s way of seeking help was rare.

4. What’s the text mainly about?

A．A smart father.	B．An impossible try.
C．A rescue from a bottle.	D．An adventure in a canyon.