The flame of the, torch is lit at the Temple of Hera and then carried to the ancient _____

A.火焰

B.奴隶

C.石灰

D.湖泊

A.interest

B.flame

C.disgrace

D.impression

ia, Greece.

A．Y

B．N

C．NG

A.ASIMO

B.Flame

C.Atlas

D.WABOT-1

A.FLAME

B.LANTERN

C.SUNSET

D.CLAIM

A.slammer病毒

B.Flame火焰病毒

C.duqu病毒

D.stuxnet病毒

All the following could be defined as combustion EXCEPT ______.

A．a quietly burning flame

B．an explosion

C．a radiator giving off heat

D．the drying of oil based paint

Olympic Torches

Every two years, people around the world wait in anticipation as a torch-beating runner enters the Olympic arena and lights the cauldron(主火炬). The symbolic lighting of the Olympic flame marks the beginning of another historic Olympic Games.

The opening ceremony is the end of a long journey for the Olympic torah. By the time it arrives in the stadium, it has traveled thousands of miles. It may have crossed oceans and deserts and traversed mountains. It may have been carried on planes, trains, bicycles, boats, and even dog sleds. And it will have passed through the hands of thousands of different people around the globe. This article chronicles the history of the Olympic torch, reveals how it is designed to stay lit through even the harshest weather conditions, and follows its path from Olympia, Greece, to the Olympic Games.

History of the Torch

Fire is always held great power for humans. It cooks our food, keeps us warm, and lights our way through the dark.

The ancient Greeks revered the power and fire. In Greek mythology, the god Prometheus stole fire from Zeus and gave it to humans. To celebrate the passing of fire from Prometheus to man, the Greeks would hold relay races. Athletes would pass a lit torch to one another until the winner reached the finish line.

The Greeks held their first Olympic Games in 776 B.C. The Games, held every four years at Olympia, honored Zeus and other Greek gods. The Olympics also marked the beginning of a period of peace for the often warring Greeks. At the start of the Games, runners called "heralds of peace" would travel throughout Greece, declaring a "sacred truce(休战) "to all wars between rival city-states. The truce would remain in place for the duration of the games, so that spectators could safely travel to the Olympics.

A constantly burning flame was a regular fixture throughout Greece. It usually graced the alters(祭坛) of the Greek gods. In Olympia, there was an altar dedicated to Hera, goddess of birth and marriage. At the start of the Olympic Games, the Greeks would ignite a cauldron of flames upon Hera's altar. They lit the flame using a hollow disc or mirror called a skaphia, which, much like the modern oval mirror, focused the sun's rays into a single point to light the flame. The flame would burn throughout the Games as a sign of purity, reason, and peace.

The Greeks stopped holding their Olympic Games after about a thousand years, and the torch, relays and lighting of the flame also stopped. The Olympic Games did not reemerge until 1896, when the first modern Games were held in Athens. The torch relay took a bit longer to reemerge.

The Birth of the Modern Torch Relay

The flame was reintroduced to the Olympics at the 1928 Amsterdam Games. A cauldron was lit, but there was no torch relay.

The first Olympic torch relay was at the 1936 Berlin Summer Games. Carl Diem, a German history professor and Secretary General of the Organizing Committee of the Games inn, educed the relay as a way of reconnecting the modern Olympics with the Games' historical roots. The flame was lit in Olympia, Greece, just as it had been centuries before. Then it was carried to Berlin, Germany, for the start of the Olympics.

The torch relay was not introduced to the Winter Olympics until the 1952 Games. It was lit that year not in Olympia, Greece, but in Norway, which was chosen because it was the birthplace of skiing. But since the 1964 Olympics at Innsbruck, Austria, every Olympic Games—Winter and Summer—has begun with a torch-lighting ceremony in Olympia, Greece, followed by a torch relay to the Olympic stadium.

The Lighting of the Olympic Torch

The Olympic torch is lit several months before the start of the actual Games. The flame begins its journey at the site of the original Olympic Games—Olympia, Greece. It is lit,just

A．Y

B．N

C．NG

A.茚达特罗/格隆溴铵显著降低慢阻肺患者急性加重

B.从治疗3个月起至1年，相较于沙美特罗/氟替卡松，茚达特罗/格隆溴铵显著降低SGRQ评分

C.经1年治疗后，茚达特罗/格隆溴铵增加了慢阻肺中重度急性加重率

D.经1年治疗后，茚达特罗/格隆溴铵显著降低慢阻肺中重度急性加重率且优于沙美特罗/氟替卡松

ygen, feeds on whatever it can find, and then dies. And when a forest fire rages out of control, threatening human lives and homes, it must be fought like a "wild animal." The fight is often desperate, since firefighters' best efforts may be dwarfed by the fury of a large fire. But the fire's own traits can be used against it.

The heated air above a fire rises in a pillar of smoke and burnt gases, pulling fresh air in from the sides to replace it. Firefighters use this fact when they "fight fire with fire." They start a fire well in front of the one which they are fighting. Instead of traveling on in front of the huge fire, the smaller fire is pulled back toward it by the updrafts of the larger blaze. As it travels back to meet the large fire, the smaller backfire burns away the fuel that the forest fire needs to survive.

Even when a backfire has been well set, however, the fire may still win the struggle. The wind which the firefighters used to help them may now become their enemy. When the backfire meets the main fire, before both die for lack of fuel, there is tremendous flame, great heat and wild winds. A strong gust may blow the fire into the treetops beyond the area, giving the fire new fuel and a new life.

This passage focuses on ______.

A．how fires start

B．damage caused by fire

C．the fascination of fire

D．fighting forest fires