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提问人:网友posywhale 发布时间:2022-01-06
[主观题]

Discovery Channel's weekly series "Unsolved History" is one of the best among similar TV p

rograms.

A.Y

B.N

C.NG

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更多“Discovery Channel's weekly series "Unsolved History" is one of the best among similar TV p”相关的问题
第1题
According to the passage, which of the following statements is INCORRECT?A.Google is launc

According to the passage, which of the following statements is INCORRECT?

A.Google is launching the " superphone" product to compete with iPhone.

B.Apple is going to introduce the digital tablet product.

C.Sony is introducing new television sets for watching three-D TV.

D.Panasonic and the Discovery Channel plan to start their own three-D channels.

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第2题
The largest shark known to us, Megalodon, is extinct. Or is it? Carcharodon Megalodon, com
monly known as Megalodon, is believed to have lived between I million and 5 million years ago and thought to have been 52 feet long. It is (or was) a shark that had a jaw 7 or more feet wide. Fairly recently, there has been some speculation about whether it is extinct or just out of reach. But few people believe that Megalodon has found a home deep in the ocean.

There are many known "Living Fossils": Coelacanth, Sea Cucumbers, Sea Urchins, Lobsters, Sea Stars. The common ones like lobsters and sea urchins are not really looked on as anything amazing. They've been around for thousands of years or more, and axe easily accessible to us. What if they weren't accessible and yet still existed? We would label them extinct. The discovery of a live Coelacanth, a fish long believed extinct, challenged some scientists' long-held beliefs on extinction. There have been recent discoveries Of incredibly large squid, and deep-sea fish never before seen by scientists.

In the 1960s the U.S. Navy set up underwater microphones around the world to track Soviet submarines. The network, known as the Sound Surveillance System, still lies deep below the ocean's surface in a layer of water known as the "deep sound channel'. The temperature and pressure of the channel allow sound waves to travel undisturbed. NOAA's Acoustic Monitoring Project has been using the Sound Surveillance System to listen for changes in ocean structure like ocean currents or volcanic activity. Most of the sounds recorded are common and of no concern. One sound, identified in 1977 by U.S. Navy "spy" sensors, was odd. It was obviously a marine animal but the call was more powerful than any of the calls made by any other reported sea creature. It was too big for a whale. Could it be a deep-sea monster? One possibility was a giant squid, but no one is sure. It was named "Bloop". Could it be Megalodon? If Megalodon is still alive down in the bottom of the ocean, we may some day soon discover it. Then what? Deep sea diving will never be the same, that's for sure!

The following is commonly known EXCEPT ________.

A.Megalodon, the largest shark, is extinct

B.Megalodon is not extinct but just out of reach

C.Megalodon was 52 feet long and had a jaw 7 or more feet wide

D.Megalodnn lived between several million years ago

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第3题
The largest shark known to us, Megalodon, is extinct. Or is it? Carcharodon Megalodon, com
monly known as Megalodon, is believed to have lived between 1 million and 5 million years ago and thought to have been 52 feet long. It is (or was) a shark that had a jaw 7 or more feet wide. Fairly recently, there has been some speculation about whether it is extinct or just out of reach. But few people believe that Megalodon has found a home deep in the ocean.

There are many known "Living Fossils": Coelacanth, Sea Cucumbers, Sea Urchins, Lobsters, Sea Stars. The common ones like lobsters and sea urchins are not really looked on as anything amazing. They've been around for thousands of years or more, and are easily accessible to us. What if they weren't accessible and yet still existed? We would label them extinct. The discovery of a live Coelacanth, a fish long believed extinct, challenged some scientists' long-held beliefs on extinction. There have been recent discoveries of incredibly large squid, and deep-sea fish never before seen by scientists.

In the 1960s the U.S. Navy set up underwater microphones around the world to track Soviet submarines. The network, known as the Sound Surveillance System, still lies deep below the ocean's surface in a layer of water known as the "deep sound channel". The temperature and pressure of the channel allow sound waves to travel undisturbed. NOAA's Acoustic Monitoring Project has been using the Sound Surveillance System to listen for changes in ocean structure like ocean currents or volcanic activity. Most of the sounds recorded are common and of no concern. One sound, identified in 1977 by U.S. Navy "spy" sensors, was odd. It was obviously a marine animal but the call was more powerful than any of the calls made by any other reported sea creature. It was too big for a whale. Could it be a deep-sea monster? One possibility was a giant squid, but no one is sure. It was named "Bloop". Could it be Megalodon? If Megalodon is still alive down in die bottom of the ocean, we may some day soon discover it. Then what? Deep sea diving will never be the same, that's for sure!

The following is commonly known EXCEPT ______.

A.Megalodon, the largest shark, is extinct

B.Megalodon is not extinct but just out of reach

C.Megalodon was 52 feet long and had a jaw 7 or more feet wide

D.Megalodon lived between several million years ago

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第4题
听力原文: In the 1930s, archaeologists discovered spear points in the New Mexico town of C
lovis, dated from around 13,000 years ago. The individuals who made them have since become known as the "Clovis people" and are believed by many to have been the first people to enter North America.

The "Clovis first" theory proposes that around 14,000 years ago people traveled across a land bridge that existed between Siberia and Alaska. Once in North America, their journey took them through a corridor that opened up between the ice sheets in Western Canada making them the first to be able to enter the interlor of the continent. It's an elegant and almost biblical explanation; but more recent fossil finds question the theory. Some researchers believe the first people entered North America much earlier—perhaps as long as 20,000-30,000 years ago.

In more recent years, the Pacific coast has been seen as an alternative route of entry-possibly at an earlier date than the Clovis. There is little direct evidence to support this, but fossil evidence from the islands of south-east Alaska tells us that this region, or part of it, was free of ice and may have been a refuge for animals throughout the ice age.

If animals such as bears and foxes lived here then why not people? Fossilized human remains have been found on Alaska's Prince of Wales Island and much further south on the Channel Islands off California. These are thought to be as old as some of the Clovis .finds and it may only be a matter of time before older remains are discovered.

If people did travel down the coasts between islands, they must have used boats. Although the coastal route still lacks a lot of hard evidence, the relatively recent discovery of a stone tool off the coast of British Columbia has added support to the idea.

Why are "Clovis people" believed to first enter North America?

A.Some fossils have been discovered.

B.They were found to have lived in the area known as the refuge during the ice age.

C.Some spear points were discovered.

D.It is in accordance with the biblical explanation.

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第5题
The best title for this passage is ______.A.The Discovery of Magellan's StraitB.The discov

The best title for this passage is ______.

A.The Discovery of Magellan's Strait

B.The discovery of the Philippines

C.The Most Dangerous Expedition in Navigation

D.The First Expedition to Asia

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第6题
Distribution channel is a way of selling a company's product either directly or via distributors.
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第7题
The scientist's discovery will have a profound influence on mankind.A.deepB.moderateC.nega

The scientist's discovery will have a profound influence on mankind.

A.deep

B.moderate

C.negative

D.positive

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第8题
Section BDirections: There are 2 passages in this section. Each passage is followed by som

Section B

Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.

Stone tools, animal bones and an incised mammoth tusk found in Russia's frigid far north have provided what archaeologists say is the first evidence that modern humans or Neanderthals lived in the Arctic more than 30,000 years ago, at least 15,000 years earlier than previously thought.

A team of Russian and Norwegian archaeologists, describing the discovery in today's issue of the journal Nature, said the campsite, at Mamontovaya Kurya, on the Ura River at the Arctic Circle, was the "oldest documented evidence for human presence at this high latitude. " Digging in the bed of an old river channel close to the Ural Mountains, the team uncovered 123 mammal bones, including horse, reindeer and wolf." The most important find," they said, was a four-foot mammoth tusk with grooves made by chopping with a sharp stone edge, "unequivocally the work of humans." The tusk was carbon-dated at about 36,600 years old. Plant remains found among the artifacts were dated at 30,000 to 31,000 years."

Other archaeologists said the analysis appeared to be sound. But they cautioned that it was difficult, when dealing with riverbed deposits, to be sure that artifacts had not become jumbled out of their true place, and thus time, in the geologic layers. They questioned whether the discoverers could reliably conclude that the stone tools were in fact contemporary with the bones. But in a commentary accompanying the article, Dr. John A. J. Gowlett of the University of Liverpool in England wrote, "Although there are questions to be answered, the artifacts illustrate both the capacity of early humans to do the unexpected, and the value of archaeologists' researching in unlikely areas."

The discoverers said they could not determine from the few stone artifacts whether the site was occupied by Neanderthals, hominids who by then had a long history as hunters in Europe and western Asia, or some of the first anatomically modern humans to reach Europe.

In any case, other archaeologists said, the findings could be significant.

If these toolmakers were Neanderthals, the findings suggested that these human relatives, who became extinct after 30,000 years ago, were more capable and adaptable than they are generally given credit for. Living in the Arctic climate presumably required higher levels of technology and social organization.

If they were modern humans, then the surprise is that they had penetrated so far north in such a short time. There has been no firm evidence for modern humans in Europe before about 35,000 years ago. It had generally been thought that the northernmost part of Eurasia was not occupied by humans until the final stage of the last ice age, some 13,000 to 14,000 years ago, when the world's climate began to moderate. Dr. Gowlett said the new findings indicated that the Arctic region of European Russia was extremely cold but relatively dry and ice-free more than 30,000 years ago.

What is the significance of the discovery?

A.It shows that modern humans lived in the Arctic more than 3,000 years ago.

B.It shows that Neanderthals lived in the Arctic more than 3,000 years ago.

C.It shows the oldest documented evidence for human presence at such high latitude.

D.It shows human could use tools 30,000 years ago.

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第9题
The scientist's discovery will have a______ influence on mankind.A.prominentB.promisingC.p

The scientist's discovery will have a______ influence on mankind.

A.prominent

B.promising

C.profound

D.productive

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第10题
Which university offers courses through one of the BBC's television channel?A.Open Univers

Which university offers courses through one of the BBC's television channel?

A.Open University

B.Cambridge University

C.Oxford University

D.Buckingham University

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