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更多“The world largest search engin…”相关的问题
A.2012
B.2000
C.2009
A．that
B．where
C．what
D．how
From the first paragraph, we learn that ______.
A. the number of prisoners in America is increasing
B. America has the largest prison in the world
C. crime in America is getting much more serious
D. it is easy for a person to be locked up in America
Sharks are different from other fish. For example, other fish have skeletons made of hard bones. Sharks have skeletons made of cartilage. In addition, most fish have a special organ called a swim bladder to stop them from sinking but sharks do not. If a shark does not swim constantly, it sinks. Shark babies grow inside eggs. The baby sharks are called pups.
Most sharks eat fish. Some also eat seals and other sharks. Many people are afraid of sharks be cause of their reputation as' man-eaters'. However, there are fewer than one hundred shark attacks on humans in the world each year.
Humans are the sharks' worst enemies. Fishermen kill them because of their valuable dorsal fins. Often, they catch a shark, cut off its fin and throw it back into the sea. If a shark has no fin, it dies because it cannot swim. Scientists believe that humans kill more than one million sharks every year.
Sharks are ______.
A．humans' friends
B．man's enemies
C．the world's largest fish
D．not the same as other fish
Deep inside a mountain near Sweetwater in East. Tennessee is a body of water known as the Lost Sea. It is listed
by the Guinness Book of Would Records as the world’s largest underground lake. The Lost Sea is part of an
extensive and historic cave system called Craighead Caverns.
The caverns have been known and used since the days of the Cherokee Indian nation. The cave expands into
a series of huge rooms from a small opening on the side of the mountain. Approximately one mile from the
entrance, in a room called “The Council Room,” many Indian artisfacts have been found. Some of the items
discovered include pottery, arrowheads, weapons, and jewelry.
For many years there were persistent rumors of a large underground lake somewhere in a cave, but it was not
discovered until 1905. In that year, a thirteen-year-old boy named Ben Sands crawled through a small opening
three hundred feet underground. He found himself
in a large cave half filled with water.
Today tourists visit the Lost Sea and ride far out onto it in glass-bottomed boats powered by electric motors.
More than thirteen acres of water have been mapped out so far
and still no end to the lake has been found. Even though teams of divers have tried to explore the Lost Sea,
the full extent of it is still unknown.
The Lost Sea is unique because it is ________.
A. part of a historical cave system
B. the biggest underground lake in the world
C. listed in the Guinness Book of World Records
D. the largest body of water in Tennessee
The toothless, or baleen, whales belong to the suborder of Mysticeti. This is a group of generally large whales, formerly abundant in all the oceans of the world. Though reduced by hunting, most species are still found along the coasts of the United Stated and Canada. All but two of the Mysticeti reach 40 feet or more at maturity, with the blue whale running up to 100 feet and tipping the scales at up to 130 tons. This whale is by far the largest creature that has ever lived on earth, 4 times the weight of the largest dinosaur, 30 times that of an elephant.
With what topic is the passage mainly concerned？
A．Breeding habits of whales.
B．Differences between whales.
C．Efforts to preserve whales.
D．The intelligence of whales.
What is the 'biggest city in the world？ That is, (21) city has the largest population？ This seems like (22) question to answer, but actually it isn't.
It's actually rather difficult to say which cities (23) the largest. There are two reasons for this difficulty. First of all, it isn't easy to determine a city's boundaries, that is, where a city ends. Nowadays, nearly all cities have a large (24) area around them. So when we talk about the population of a city, we often mean the population of the whole metropolitan area around the city. That means that it's difficult to determine what the population of a city is because it's difficult to define what a city is.
The second reason that it is difficult to 25 the population of different cities is this: it is almost impossible to get (26) about the population of all cities for the same year. For example, we might get an estimate of New York's population in 1979 and an (27) of Mexico City's population in 1981. So we real ly can't compare the numbers because the information is for (28) different years. And the population of cities changes rather quickly, especially in some cases. For example, the population of Jakarta, Indonesia, may increase by 5% each year, so the population figure will change rather quickly.
So we can say that these are our two (29) for comparing the populations of cities: one, it's difficult to determine the (30) of a city, and two, it is difficult to get accurate information.
21. A. what
B. which
C. where
D. how
Caterpillar Tractor, one of the largest producers of farm machinery in the world, has hired you to advise them on pricing policy. One of the things the company would like to know is how much a5 percent increase in price is likely to reduce sales. What would you need to know to help the company with this problem？ Explain why these facts are important.
【B4】 its economy continues to recover, the U.S. is increasingly becoming a nation of part-timers and temporary workers. This " 【B5】 " work force is the most important 【B6】 in American business today, and it is 【B7】 changing the relationship between people and their jobs. The phenomenon provides a way for companies to remain globally competitive 【B8】 avoiding market cycles and the growing burdens 【B9】 by employment rules, healthcare costs and pension plans. For workers it can mean an end to the security, benefits and sense of 【B10】 that came from being a loyal employee.
【B1】
A．swarm
B．stride
C．separate
D．slip
Then came the 20th century and its burst of technology. Suddenly people were talking across oceans, flying across continents, hearing broadcasts that reverberated around the planet. Language spread faster than ever. The world wars carried American and British soldiers around the world, pollinating English as they went. When World War Ⅱ ended, the English language was barreling (高速行驶) forward on the shoulders of American capitalism — McDonald's and Coca-Cola, Rambo and MTV, munitions (军火) and computer technology.
Currently, about 80 percent of the information stored on computer systems worldwide is in English. Two-thirds of the world's science writing is in English, and English is the main language of technology, advertising, media, international airports, and air traffic controllers. Today there are more than 700 million English users in the world, and over half of these are non-native speakers, constituting the largest number of non-native users than any other language in the world.
What is the main topic of this passage？
A．The expansion of English as an international language.
B．The number of non-native users of English.
C．The French influence on the English language.
D．The use of English for science and technology.
The 2014 Ebola outbreak is the largest in history and the first Ebola outbreak in West Africa. Although the current epidemic does not cause a significant risk to other nations, many countries, including China and the United States of America, have actually been working closely with the Ebola hit states. For example, the U.S. Centers for Disease Control and Prevention (CDC) is taking precautions at home besides its activities abroad.
CDC's team of “virus hunters” is supported by specialized public health teams both in West Africa and at the CDC Atlanta headquarters. Together, they offer continuous support to save lives and protect people. CDC works closely with a number of U.S. government agencies, national and international partners. CDC's experience of working with Ebola is important to the World Health Organization's growing West Africa Ebola response.
On Sept. 2, 2014, CDC Director, Tom Frieden called for more international partners to join this effort. “The sooner the world comes together to help West Africa, the safer we all will be. We know how to stop this outbreak. There is a window of opportunity to do so the challenge is to scale up the massive response needed to stop this outbreak.”
CDC's response to Ebola is the largest international outbreak response in CDC's history with over 100 disease specialists on the ground in West Africa, supported by hundreds of public health emergency response experts stateside , activated at Level 1, its highest level, because of the significance of this outbreak.
The CDC supports affected countries to establish Emergency Operations Centers at national and local levels and helps countries track the epidemic including using real-time data to improve real-time response.
Efforts in West Africa to identify those infected and track people who have come into contact with them are improving. The CDC is operating and supporting labs in the region to improve diagnosis and testing samples from people with suspected Ebola from around the world. Local health care systems are strengthened through communication, coordination with partners and training on infection control for health care workers and safe patient treatment.
26. How could we describe the 2014 Ebola outbreak？
A. The first one in western countries.
B. It did not ever threaten West Africa.
C. Not the first but the largest one.
27. The 2014 Ebola outbreak response was()？
A. an American stateside activity.
B. an international activity.
C. a regional activity.
28. What does the underlined word “massive” mean in Paragraph 3？
A. huge.
B. quick.
C. urgent
29. How many disease specialists from CDC have gone to West Africa for the Ebola response？
A. Less than 100.
B. A hundred.
C. More than 100.
30. What action does CDC take to respond to the large Ebola outbreak？
A. Work closely with governmental, national and international partners.
B. Call for more partners to join this effort.
C. Establish Emergency Operations Centers.
