题目内容
（请给出正确答案）
A．find out which rock contains more iron
B．see how hot it needs to vaporize irons
C．investigate how the Moon was formed
D．estimate which rock is more valuable
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更多“Franck Poitrasson and his colleagues analyzed the weight of the elements present in the ro”相关的问题
A:to
B:with
C:for
D:of
According to the author, what Franck Ketchouang wrote was______.
A．silly
B．simple
C．remarkable
D．disputable
Project X is a program that uses drama, dance, poetry and other creative outlets to help students discuss the tough and sometimes painful problems they face as pre-teen immigrants with significant language barriers. A final unveiling of their creation will be performed for friends and family at the end of the year at Imagination Stage.
Wanjiru Kamau, coordinator of White Oak's African Club said it's important to give troubles to group members to help them find their place at the school. "It comforts those who are uncomfortable, and it discomforts those who are comfortable," Kaman said of Project X.
Kamau teamed up with Imagination Stage after she noticed that many African students seemed uncomfortable talking about problems, such as being laughed at by their fellow students about how they look and talk. When most of the kids join the club, they speak little or no English, Kamau said. Each week, the club typically draws five to 10 students who are originally from Africa for discussion sessions and the Project X program.
"We're going to express ourselves through our words and our actions, and that's powerful," said teaching artist Meg Green as she introduced fill-in-the-blank poems the students wrote about their identities.
One student, Franck Ketchouang, 13, wrote, "I am from the world; I am love," which drew oohs and aahs from the group. Ketchouang has been in the United States less than a year, said Program Coordinator Chad Dike. When Ketchouang started attending Project X, he had been in the United States for two months and spoke no English. Now he's one of the group's most outgoing members and helps translate instructions from English to Creole for the group's newest member, who is from Haiti.
Many people will give up when there's a language barrier, "but these students prove them wrong," Kamau said. "You do have something to give. You are important. When TV, media, etc. are bringing them down, this program is bringing them up."
Project X is intended for helping the young African immigrants to______.
A．get over language barriers
B．overcome tough problems
C．enrich after-school life
D．become more creative
Section A
Directions: In this section, there is a short passage with 5 questions or incomplete statements. Read the passage carefully. Then answer the questions or complete the statements in the fewest possible words.
Two cities that lay at the edge of the Mediterranean more than 1.200 years ago, Herakleion and Eastern Canopus, disappeared suddenly, swallowed by the sea. Now. an international team of scientists may have figured out the mystery of why it happened.
The researchers have concluded that the two cities collapsed when the land they were built on suddenly liquefied (液化).
Until recently, the only evidence that they existed came from Greek mythology and the writings of ancient historians. Then, during expeditions in 1999 and 2000, a team of French marine archaeologists headed by Franck Goddio found the ruins—almost completely intact—buried on the seafloor of the Abu Qir Bay in Egypt.
Since then, there has been much speculation (猜测) about why the cities disappeared so suddenly. Earthquakes, subsistence (生存) conditions, and a rise in sea level have all been suggested as possibilities.
"There are no written documents on how, when, or why these two cities went down," said Jean Daniel Stanley, a geoarchaeologist with the Smithsonian Institution in Washington, D.C.
Stanley and his colleagues at the Institute Europeen d'Archeologie Sous-Marine in Paris (the European Institute of Marine Archaeology) argue that a major flood of the Nile in the middle of the eighth century A.D. was to blame. The flood, they say, triggered the sinking of Eastern Canopus and Herakleion by turning the ground beneath the cities into liquefied mud.
The collapse was sudden and catastrophic, said Stanley. "We can tell," he said, "because in both places we've found gold and jewelry, which, if there had been time, people would have taken with them when fleeing."
Herakleion and East Canopus once stood at the mouth of the now-extinct Canopic branch of the Nile. Built sometime between the seventh and sixth centuries B.C., as the days of the Egyptian Pharaohs were coming to an end, the cities flourished as gateways to Egypt.
Herakleion was a port of entry to Egypt and grew wealthy by collecting taxes on goods being shipped upriver.
Frozen in time below the waters were many temples and statues of gods and goddesses, also attesting to the cities' role as destinations for religious pilgrims.
Until the undersea discovery, historians knew about the cities only through myth and ancient literature. Menelaus, the king of Sparta and husband to Helen, over whom the Trojan War was fought, was said to have stayed in Herakleion following the ten-year war against Troy.
Greek mythology holds that the city of Canopus was named after Menelaus' helmsman (舵手), who was bitten by a viper (毒蛇) and transformed into a god.
The Greek historian Herodotus wrote of having visited the cities in 450 B.C.
The cities' fortunes declined when Alexander the Great founded Alexandria in 331 B.C. Yet centuries later. Greek geographer Strabo (63 B.C.-21 A.D.) described the location and wealth of Herakleion. while Seneca (5 B.C.-65 A.D condemned the cities for decadent (颓废的) and corrupt lifestyles.
According to the passage, when did Herakleion and Eastern Canopus disappear？
An atom consists of a tiny core called the "nucleus" with attendant electrons circling round it. The hydrogen atom, which is the simplest and lightest, has only one electron. Heavier atoms have more and more as they go up the scale. The first discovery that had to do with what goes on in nuclei was radioactivity, which is caused by particles being shot out of the nucleus. It was known that a great deal of energy is locked up in the nucleus, but, until just before the outbreak of the Second World War, there was no way of releasing this energy in any large quantity. A revolutionary discovery was that, in certain circumstances, mass can be transformed into energy in accordance with Einstein's formula which states that the energy generated is equal to the mass lost multiplied by the square of the velocity of light.
The A-bomb, however, used a different process, depending upon radioactivity. In this process, called "fission", a heavier atom splits into two lighter atoms. In general, in radioactive substances this fission proceeds at a constant rate which is slow where substances occurring in nature are concerned. But there is one form. of uranium called "U235" which, when it is pure, sets up a chain reaction which spreads like fire, though with enormously greater rapidity. It is this substance which was used in making the atom bomb.
The political background of the atomic scientists' work was the determination to defeat the Nazis. It was held--I think rightly--that a Nazi victory would be an appalling disaster. It was also held, in Western countries, that German scientists must be well advanced towards making an A-bomb, and that if they succeeded before the West did they would probably win the war. When the war was over, it was discovered, to the complete astonishment of both American and British scientists, that the Germans were nowhere near success, and as everybody knows, the Germans were defeated before any nuclear weapons had been made. But I do not think that nuclear scientists of the West can be blamed for thinking the work urgent and necessary. Even Einstein favored it.
When, however, the German war was finished, the great majority of those scientists who had collaborated towards making the A-bomb considered that it should not be used against the Japanese, who were already on the verge of defeat and, in any case, did not constitute such a menace to the world as Hitler. Many of them made urgent representations to the American Government advocating that, instead of using the bomb as a weapon of war, they should after a public announcement, explode it in a desert, and that future control of nuclear energy should be placed in the hands of an international authority. Seven of the most eminent of nuclear scientists drew up what is known as "The Franck Report" which they presented to the Secretary of War in June 1945. This is a very admirable and far-seeing document, and if it had won the assent of the politicians, none of our subsequent terrors would have arisen.
We may infer that the writer's attitude towards the A-bomb is that ______.
A．it is a necessary evil
B．it is a terrible threat to the whole of mankind
C．it played a vital part in defeating the Japanese
D．it was a wonderful invention
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