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Rainfall in most of the Sahara is________.
A) less than five inches per year
B) less than ten inches per year
C) less than twenty inches per year
D) zero
B) less than ten inches per year
C) less than twenty inches per year
D) zero
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第一篇The SaharaThe name Sahara derives from the Arabic word for"desert"or"steppe".At 3.5 million square miles, an area roughly the size of the United States,the Sahara Desert in northern Africa is the largest desert in the world.It spans the continent from the Atlantic Ocean to the Red Sea. Daytime temperatures can reach as high as 130°F.The humidity sometimes gets into the teens.But it can also be as low as 2.5 percent,the lowest in the world.Most of the Sahara receives less than five inches of rain per year,while large areas sometimes have no rainfall at all for years.At the heart of the Sahara is the landlocked north African country of Niger. Here the sand dunes can be100 feet tall and several miles long. Here sand plains stretch over an area larger than Germany where there is neither water nor towns.Yet sitting in the midst of the surrounding desert is the town of Bilma. Suddenly there are pools of clear water. Surprisingly,there are groves of date palms.Underground water resources,or oases, sufficient to support irrigated agriculture are found in dry stream beds and depressions.Irrigation ditches run off a creek to water fields.Corn,cassava,tea,peanuts,hot peppers,and orange,lime,and grapefruit trees grow in these fields.Donkeys and goats graze on green grass.The Sahara of Niger is still a region where you can see a camel caravan of 500 camels tied together in loose lines as long as a mile,traveling toward such oasis towns.There a caravan will collect life-sustaining salt,which is mined from watery basins,and transport it up to 400 miles back to settlements on the edges of the desert.The round trip across the vast sands takes one month.Rainfall in most of the Sahara is_______________.A:less than five inches per yearB:less than ten inches per yearC:less than twenty inches per yearD:zero
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Investment Tips
By Scott Russell
Investing in stocks that are less than $5 per share is a good way to boost your stock portfolio. Many big investors ignore these stocks because of the potential risks involved, however, these stocks often grow significantly over the course of time. Investing in inexpensive stocks is a wise move, provided that you hold on to them for at least one year to allow enough time for them to develop.
Four stocks that I suggest for less than $5 per share are High Standard Pharmaceuticals Company, Nova Oil, Inc., Direct Access Publishing Group, and Peak Media Holdings. If you are new to the market, you might want to try investing in them through an online brokerage firm that does not charge a high commission for their services, and remember: only invest up to five percent of your entire stock portfolio in any stock, including these.
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Quick Stock Quotes -- Thursday April 22 -- 2:40 P.M.
(Quotes delayed by 20 minutes)
Nova Oil, Inc. (NOI)
3.93 +0.08 +2.08%
Previous Close 3.85
Open 3.87
High 3.94
Low 3.79
Volume 864,300
Bid 3.91
Bid Size 600
Ask 3.97
Ask Size 3,300
52 Week range 1.64-8.90
At what price did the company's stock close on the previous day?A. $3.79 per share
B. $3.85 per share
C. $3.91 per share
D. $3.93 per share
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资料：Up to 80 per cent of the world’s middle classes will live in developing countries by 2030 thanks to surprising recent gains in poverty reduction, according to a United Nations report published on Thursday.
“Never in history have the living conditions and prospects of so many people changed so dramatically and so fast.” concludes the UN’s latest Development Report. “The world is witnessing an epochal ‘global rebalancing’.”
Underpinning the improvements in the human development index（HDI） was rapid growth in countries such as China, India and Brazil, with China and India having doubled per capita economic output in less than 20 years. But the study stressed that growth and improvements in HDI spread far beyond the four Bric countries of Brazil, Russia, India and China, and included at least 40 countries that had accompanied greater economic dynamism with effective poverty-reduction policies.
Afghanistan, Sierra Leone, Ethiopia, Rwanda and Angola were among 14 countries that have recorded gains in HDI of more than 2 per cent a year since 2000. Partly as a result, the report found that worldwide extreme income poverty has plunged from 43 per cent in 1990 to just 22 per cent in 2008, including more than 500m being lifted out of poverty in China alone. The report stated that such gains had already helped the world achieve the main poverty eradication goal of the so-called Millennium Development Goals, which called for the share of people living on less than $1.25 a day to be cut by half from 1990 to 2015.
Underpinning this poverty reduction was developing countries’ increasing share of global trade, which grew from 25 per cent to 47 per cent between 1980 and 2010. “The south as a whole is driving global economic growth and societal change for the first time in centuries,” says the report.
The report found that trade among developing countries was the biggest factor in that expansion, increasing from less than 10 per cent of total global trade to more than 30 per cent. “Trade between countries in the south will overtake that between developed nations,” the report said.
“More than 500m being lifted out of poverty in China alone” illustrates ______.A.the economic development of China is important
B.the role of some developing countries is significant for poverty reduction
C.14 countries are developing faster than China
D.it is crucial to make a clear goal first
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资料：Up to 80 per cent of the world’s middle classes will live in developing countries by 2030 thanks to surprising recent gains in poverty reduction, according to a United Nations report published on Thursday.
“Never in history have the living conditions and prospects of so many people changed so dramatically and so fast.” concludes the UN’s latest Development Report. “The world is witnessing an epochal ‘global rebalancing’.”
Underpinning the improvements in the human development index（HDI） was rapid growth in countries such as China, India and Brazil, with China and India having doubled per capita economic output in less than 20 years. But the study stressed that growth and improvements in HDI spread far beyond the four Bric countries of Brazil, Russia, India and China, and included at least 40 countries that had accompanied greater economic dynamism with effective poverty-reduction policies.
Afghanistan, Sierra Leone, Ethiopia, Rwanda and Angola were among 14 countries that have recorded gains in HDI of more than 2 per cent a year since 2000. Partly as a result, the report found that worldwide extreme income poverty has plunged from 43 per cent in 1990 to just 22 per cent in 2008, including more than 500m being lifted out of poverty in China alone. The report stated that such gains had already helped the world achieve the main poverty eradication goal of the so-called Millennium Development Goals, which called for the share of people living on less than $1.25 a day to be cut by half from 1990 to 2015.
Underpinning this poverty reduction was developing countries’ increasing share of global trade, which grew from 25 per cent to 47 per cent between 1980 and 2010. “The south as a whole is driving global economic growth and societal change for the first time in centuries,” says the report.
The report found that trade among developing countries was the biggest factor in that expansion, increasing from less than 10 per cent of total global trade to more than 30 per cent. “Trade between countries in the south will overtake that between developed nations,” the report said.
The passage mainly ______.A.discuss why developing countries are playing major role
B.illustrate a theory for poverty reduction
C.explain reasons behind a report
D.interpret the role of trade for developing countries
考题
资料：Up to 80 per cent of the world’s middle classes will live in developing countries by 2030 thanks to surprising recent gains in poverty reduction, according to a United Nations report published on Thursday.
“Never in history have the living conditions and prospects of so many people changed so dramatically and so fast.” concludes the UN’s latest Development Report. “The world is witnessing an epochal ‘global rebalancing’.”
Underpinning the improvements in the human development index（HDI） was rapid growth in countries such as China, India and Brazil, with China and India having doubled per capita economic output in less than 20 years. But the study stressed that growth and improvements in HDI spread far beyond the four Bric countries of Brazil, Russia, India and China, and included at least 40 countries that had accompanied greater economic dynamism with effective poverty-reduction policies.
Afghanistan, Sierra Leone, Ethiopia, Rwanda and Angola were among 14 countries that have recorded gains in HDI of more than 2 per cent a year since 2000. Partly as a result, the report found that worldwide extreme income poverty has plunged from 43 per cent in 1990 to just 22 per cent in 2008, including more than 500m being lifted out of poverty in China alone. The report stated that such gains had already helped the world achieve the main poverty eradication goal of the so-called Millennium Development Goals, which called for the share of people living on less than $1.25 a day to be cut by half from 1990 to 2015.
Underpinning this poverty reduction was developing countries’ increasing share of global trade, which grew from 25 per cent to 47 per cent between 1980 and 2010. “The south as a whole is driving global economic growth and societal change for the first time in centuries,” says the report.
The report found that trade among developing countries was the biggest factor in that expansion, increasing from less than 10 per cent of total global trade to more than 30 per cent. “Trade between countries in the south will overtake that between developed nations,” the report said.
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B.undergoing
C.supporting
D.stressing
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A.collisions
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共用题干
第三篇The SaharaThe name Sahara derives from the Arabic word for"desert"or"steppe".At 3.5 million square miles, an area roughly the size of the United States,the Sahara Desert in northern Africa is the largest desert in the world.It spans the continent from the Atlantic Ocean to the Red Sea.Daytime temperatures can reach as high as 130°F.The humidity sometimes gets into the teens.But it can also be as low as 2.5 percent,the lowest in the world.Most of the Sahara receives less than five inches of rain per year,while large areas sometimes haveno rainfall at all for years.At the heart of the Sahara is the landlocked north African country of Niger. Here the sand dunes can be 100 feet tall and several miles long.Here sand plains stretch over an area larger than Germany where there is neither water nor towns.Yet sitting in the midst of the surrounding desert is the town of Bilma. Suddenly there are pools of clear water. Surprisingly,there are groves of date palms.Underground water resources,or oases, sufficient to support irrigated agriculture are found in dry stream beds and depressions.Irrigation ditches run off a creek to water fields.Corn,cassava,tea,peanuts,hot peppers,and orange,lime,and grapefruit trees grow in these fields.Donkeys and goats graze on green grass.The Sahara of Niger is still a region where you can see a camel caravan of 500 camels tied together in loose lines as long as a mile,traveling toward such oasis towns.There a caravan will collect life-sustainingsalt,which is mined from watery basins,and transport it up to 400 miles back to settlements on the edges of the desert.The round trip across the vast sands takes one month.Rainfall in most of the Sahara is_______.A:iess than five inches per yearB:less than ten inches per yearC:less than twenty inches per yearD:zero
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Which statement is NOT a key QoS recommended requirement for voice bearer traffic?（）A、Voice traffic should be marked to DSCP EF per the QoS baseline and RFC3246.B、Voice traffic loss should be no more than 3%.C、One-way latency （mouth-to-ear） should be less than 150 msec.D、Average one way jitter should be targeted to less than 30 msec.E、21-320 Kbps of guaranteed priority bandwidth is required per call depending on sample rate，codec，and layer 2 overhead.
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单选题Advertisement: The most flavorful olives in the world are kalamata olives. The more kalamata olives used to make a bottle of olive oil, the more flavorful the oil, and no company buys more kalamata olives than Zorba’s Olive Oil. Therefore, when you buy Zorba’s Olive Oil, you’re buying the most flavorful olive oil available today. The reasoning presented in the advertisement is flawed because it overlooks the possibility that:A
Not all of Zorba’s competitors use kalamata olives in their oil.B
Zorba’s sells more olive oil than any other company.C
The most flavorful olive oil is not necessarily the best olive oil.D
Because of bulk discounts, Zorba’s pays less per kilogram of kalamata olives than does its competitors.E
The number of kalamata olives harvested every year is far less than the number of Spanish olives harvested every year.
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单选题Sharing accommodation may be ______.A
approximately A$10, 000 per year cheaper than living alone.B
more expensive than living alone.C
not suitable for some students.D
suitable for most students.
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单选题Operating a propulsion diesel engine at less than 30% of designed normal load for prolonged periods will result in （）.A
decreased fuel consumption per brake horsepowerB
more complete cylinder scavengingC
extended valve lifeD
carbon formation on combustion chamber surfaces
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单选题If you do NOT understand the course or intention of an approaching vessel you should sound （）.A
one short blastB
one prolonged blastC
not less than five short blastsD
not less than five prolonged blasts
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单选题What is an advantage of diesel over steam turbine propulsion? （）A
Less fuel consumption per SHPB
Diesel fuel costs less than bunker C or its equivalentC
Less routine maintenance requiredD
Less weight per SHP
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单选题The signal for a fire emergency on an OSV is（）.A
a 30 second on 30 second off alternating signalB
the continuous blast of the ships whistle for not less than 10 seconds supplemented by the continuous ringing of the general alarm bells for not less than 10 secondsC
an intermittent ringing of the general alarm for not less than ten secondsD
announced over the PA system
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单选题Although many people would not believe it, the mosquito is actually the most dangerous animal in Africa. While the bite of the black mamba is invariably lethal when untreated, this dreaded snake kills only a few dozen people per year. Hippopotami, with their immense strength and foul dispositions, kill hundreds of people per year in rivers and lakes, but the mosquito is still more dangerous. Mosquitoes bite hundreds of millions of people in Africa every year, and they infect over a million each year with malaria, a disease that is often fatal. Which of the following questions would be most useful in evaluating the claim made above regarding the mosquito?A
Could a person survive an attack by a black mamba if that person received prompt medical attention?B
What criteria are used to determine which animal is the “most dangerous” animal?C
Could the incidence of mosquito bites be decreased through the judicious use of pesticides and insect repellent?D
Does malaria kill more people per year in Africa than tuberculosis?E
How does the percentage of people who survive hippopotamus attacks in Africa each year compare with the percentage of people who survive mosquito bites?
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填空题On Mindy's guitar, the frequency of a vibrating string varies inversely as the length of the string. When a guitar string of s inches in length that vibrates at a frequency of 80 cycles per second is shortened to 6 inches in length, it vibrates at a frequency of 120 cycles per second. What is the value of s?____
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单选题Which statement is NOT a key QoS recommended requirement for voice bearer traffic?（）A
Voice traffic should be marked to DSCP EF per the QoS baseline and RFC3246.B
Voice traffic loss should be no more than 3%.C
One-way latency （mouth-to-ear） should be less than 150 msec.D
Average one way jitter should be targeted to less than 30 msec.E
21-320 Kbps of guaranteed priority bandwidth is required per call depending on sample rate，codec，and layer 2 overhead.
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单选题A flashing light is a light that（）.A
flashes at regular intervals at a frequency of 120 flashes or more per minuteB
is yellow in colorC
is visible over an arc of the horizon of not less than 180°nor more than 225°D
All of the above
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单选题The governor brake shall be capable of controlling the speed of lowering a fully equipped lifeboat with its complement of persons on board at（）.A
safe speed only specifiedB
not less than 120 feet per minuteC
not more than 120 feet per minuteD
not more than 90 feet per minute
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单选题Two boards are being cut for a construction project. If the total length of the boards is 100 inches and the shorter board is 5 inches less than half the length of the longer board, what is the length of the shorter board?A
25 inchesB
30 inchesC
35 inchesD
65 inchesE
70 inches
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