If you are in a crowd, the first and most important thing is to make yourself familiar with your surroundings and mentally notice alternate exits.
| A．Be aware of the general atmosphere of the event, as panic situations can often be expected. |
| B．There is always space between people. |
| C．Do not lie on your stomach or back, as this dangerously exposes your lungs. |
| D．The worst is to be pushed by the crowd against an immovable object |
| E．If you fall, get up quickly. |
| F．No matter where you are, make sure you always know how to get out. |
| G．Instead, move in the same direction of the crowd. |
2 . Time flies, but the tracks of time remain in books and museums. This is what made a recent tragedy in Brazil even more terrible.
On Sept.2, a big fire ripped through the National Museum of Brazil. “ Two hundred years of work, research and knowledge were lost, ” Brazilian President Michel Temer wrote on Twitter after the fire. “It's a sad day for all Brazilians.”
Most of the 20 million pieces of history are believed to have been destroyed. Only as little as 10 percent of the collection may have survived, Time reported. Among all the items, there were Egyptian mummies, the bones of uniquely Brazilian creatures such as the long－necked dinosaur Maxakalisaurus, and an 11,500－year－old skull called Luzia, which was considered one of South America's oldest human fossils.
Besides these, Brazil's indigenous(本土的，土著的) knowledge also suffered. The museum housed world－famous collections of indigenous objects, as well as many audio recordings of local languages from all over Brazil. Some of these recordings, now lost, were of languages that are no longer spoken.
“The tragedy this Sunday is a sort of national suicide, a crime against our past and future generations,” Bernard Mello Franco, one of Brazil's best－known columnists, wrote on the O Globo newspaper site.
The cause of the fire is still unknown, as BBC News reported on Sept. 3. After the fire burned out, crowds protested outside the museum to show their anger at the loss of the irreplaceable items of historical value.
According to Emilio Bruna, an ecologist at the University of Florida, museums are living, breathing stores of who we are and where we've come from, and the world around us.
Just as underwater grass floats on the surface if it loses its roots, a nation is lost without its memories. The fire at the National Museum of Brazil teaches the world an important lesson: We should never neglect history.
1. What can be summarized as the main idea of the 3rd and 4th paragraphs?| A．Long history of South America. | B．Remains from the fire. |
| C．Mysteries to be solved. | D．History and knowledge burned up. |
| A．The government is to blame for the tragedy. |
| B．The museum should be rebuilt |
| C．The loss can't be made up for. |
| D．The criminal should be sentenced to death. |
| A．Living stores of our past. | B．Underwater grass. |
| C．The oldest fossils. | D．National suicide. |
| A．Death of a civilization | B．Functions of museums |
| C．Gone with the fire | D．Brazilians' memories |
3 . Electric Shock
Injuries caused by electric shock are fairly common. When a person has received an electric shock，no one should go near him/her until the current has been turned off.
If a shock occurring at work or at home causes someone to lose consciousness（知觉）, electrical connection must be broken before anyone tries to give assistance. You should either turn off the switch at the mains or，if that is not possible，push the person away with a dry piece of wood.
Treatment of Shock
Look out for signs of shock. People who have been injured or who may have lost a lot of blood, or those who have had heart attacks, may be in deep shock. The signs to look for are faintness, paleness, a moist，sticky skin, shallow, rapid breathing and a fast but weak heartbeat.
Shock can prove fatal, and it is essential to do something to prevent its developing. The best way to treat or prevent shock is to keep the patient lying down , better with the legs higher than the head；if possible，raise the lower part of the body on a rolled-up packet or similar object. Make the patient as comfortable as possible，loosening any tight clothing，and comfort him/her because fright increases the effects of shock.
1. What would happen if you didn’t turn off the current when you had to treat an unconscious person who had just received an electric shock?| A．He would regain his consciousness soon. |
| B．He would die soon. |
| C．Electrical connection would be broken. |
| D．You would be in danger of getting the shock yourself. |
| A．Picture 2. Electric Shock; Picture 3. Treatment of Shock |
| B．Picture 1. Electric Shock; Picture 4. Treatment of Shock |
| C．Picture 4. Electric Shock; Picture 2. Treatment of Shock |
| D．Picture 3. Electric Shock; Picture 1. Treatment of Shock |
