题目内容
（请给出正确答案）
A．＄3,000.
B．＄-1,000.
C．＄1,000.
D．＄-3,000.
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Mr. Wong is a small manufacturer of bicycles in Hong Kong. His business incurred the following costs for the year ended 31 December 2003.
＄
Materials (100% variable) 300,000
Labor (25% variable) 200,000
Selling & distribution cost (20% variable) 50,000
Other costs (fixed) 170,000 720,000
Normally, the business sells 3,000 units at ＄300 each:
Required:
(a)Calculate the breakeven point in units and dollar sales.
(b)Calculate the contribution to sales ratio.
(c)Calculate the margin of safety in percentage.
Mr. Wong once lived______ New Orleans.
A．in
B．at
C．from
D．on
What is Mr. Wong's company working on？
A．Giving a public presentation
B．Planning an awards ceremony
C．The construction of a new conference center
D．The design of a swimming pool
What is Mr. Wong requesting？
A．The opportunity to bid on a contract
B．Copies of published project design plans
C．Permission to distribute information to his colleagues
D．A review of a municipal annual budget
A．2001 income was understated ＄2,000.
B．2002 income was understated ＄2,000.
C．2001 income was understated ＄3,000.
D．2002 income was understated ＄3,000.
The speed of sound in air had been 【23】______ to be three-hundred-thirty-one-point-two-nine meters a second. But Doctor George Wong found, 【24】______ accident, that the speed of sound is only three-hundred-thirty-one-point-one-three meters a second. That is a difference of about sixteen centimeters a second.
Doctor Wong is a member of the National Research Council of Canada. He was studying ways to 【25】______ exactly the sound created by microphones. One of his experiments 【26】______ a number he could use to find the speed of sound. He was 【27】______ to learn that the speed of sound was slower than scientists had thought.
To explain the difference, Doctor Wong spent eighteen months 【28】______ past test research on the speed of sound. He finally found the 【29】______ of the difference. It was a mathematics mistake 【30】______ in Nineteen-Forty-Two by physicist H-C Hardy.
Doctor Wong's 【31】______ does not mean a big change for the science of sound. This is 【32】______ Doctor Hardy and Doctor Wong measured the speed of sound for what is called " standard air".
Standard air exists only 【33】______ thought. It is a way for scientists to agree 【34】______ the same speed of sound. 【35】______ the air around us, standard air always has a temperature of zero degrees Celsius and the same atmospheric pressure 【36】______ the air at sea level. Standard air al ways have same amounts of nitrogen, oxygen, carbon dioxide and 【37】______ gases. And in standard air, the speed of sound does not change.
The change in the new speed of sound is 【38】______ small to affect the work of most sound scientists and engineers. But scientists say Doctor Wong's discovery may 【39】______ improve instruments 【40】______ use the speed of sound to measure very short distances.
【21】
A．through
B．on
C．to
D．pass
A.Ernie and the narrator
B.Ernie and Nina
C.Nina and Mr. Purvis
D.Nina and the narrator
The Effects of Global Warming
Although the term “global warming” has become increasingly familiar to the general public, a recent survey carried out by the Chinchilla Institute for Environmental Studies clearly demonstrates that the full implications of the term are (51) understood. As long as public
(52) remains so low, the political measures required to deal with the (53) disastrous consequences are unlikely to come about.
Over 80 percent of the people interviewed in the Chinchilla Survey were unable to indicate any of the effects of a worldwide rise in temperature. (54) more disturbing was the very small (55) of people interviewed (7.4%)who felt that their lives would be directly (56) by global warming during the next 20 years.
This indifference is in sharp (57) to the concerns voiced by the team of professionals who conducted the Survey. Team leader professor Ernest Wong stated that we should all expect to (58) significant lifestyle. changes as a result of the effects of global warming. In (59) the likely effects, Professor Wong emphasized that the climatic changes caused by a rise in global temperature of only 1℃ would result in (60) changes.
Primary among these changes would be the rise in sea level as a (61) of the melting of the polar icecaps. The consequent 30-centimeter rise in sea levels would have disastrous consequences for lowly coastal areas. The very (62) of countries such as Bangladesh would be threatened. Indeed, (63) coastal cities would entirely escape severe flooding and damage. (64) considerable debate surrounds the accuracy of Professor Wong’s predictions, those who share his (65) prediction insist that governments must respond to this challenge by investing in coastal defense.
(51)
A．so far
B．by far
C．far from
D．far and away
A Canadian researcher has discovered that sound travels 【21】______ air more than one-half kilometer an hour slower than had been believed. The discovery has surprised many engineers and scientists who learned they had been 【22】______ the wrong speed of sound for many years.
The speed of sound in air had been【23】______ to be three-hundred-thirty-one-point-two-nine meters a second. But Doctor George Wong found, 【24】______ accident, that the speed of sound is only three-hundred-thirty-one-point-one-three meters a second. That is a difference of about sixteen centimeters a second.
Doctor Wong is a member of the National Research Council of Canada. He was studying ways to 【25】______ exactly the sound created by microph ones. One of his experiments 【26】______ a number he could use to find the speed of sound. He was 【27】______ to learn that the speed of sound was slower than scientists had thought.
To explain the difference, Doctor Wong spent eighteen months 【28】______ past test research on the speed of sound. He finally found the 【29】______ of the difference. It was a mathematics mistake 【30】______ in Nineteen-Forty-Two by physicist H-C Hardy.
Doctor Wong's 【31】______ does not mean a big change for the science of sound. This is 【32】______ Doctor Hardy and Doctor Wong measured the speed of sound for what is called" standard air".
Standard air exists only 【33】______ thought. It is a way for scientists to agree 【34】______ the same speed of sound. 【35】______ the air around us, standard air always has a temperature of zero degrees Celsius and the same atmospheric pressure 【36】______ the air at sea level. Standard air always has same amounts of nitrogen, oxygen, carbon dioxide and 【37】______ gases. And in standard air, the speed of sound does not change.
The change in the new speed of sound is 【38】______ small to affect the work of most sound scientists and engineers. But scientists say Doctor Wong's discovery may 【39】______ improve instruments 【40】______ use the speed of sound to measure very short distances.
【21】
A．through
B．on
C．to
D．pass
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