题目内容
（请给出正确答案）
--which ________, bread or rice？ --________ will do.
[A] had you better eat; Both
[B] would you like; All
[C] do you like most; None
[D] would you rather have; Either
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更多“--which ________, bread or ric…”相关的问题
Which photocopier do they decide to buy？
A．The BR 200
B．The CM 100
C．The R 30
Which can serve as the title of this text？
A．Images and Human Brain.
B．Language and Human Brain.
C．Dreams and Human Brain.
D．Conceptions and Human Brain.
Which is the master of five kinds of senses for human being？
A．The cerebral cortex.
B．The brain.
C．The nerves.
D．The muscles.
Which of the following italicized phrases indicates reason？
A．It"s a machine for slicing bread.
B．He was sent to prison for robbery.
C．Passengers for Tianjin must change at Ben"ing.
D．The shop sent me a bill for $50.
Which of the following CAN NOT be inferred from the passage？
A．We are a walking, living, breathing record of our ancestors.
B．Many American slaves did not know who their ancestors were.
C．An adopted child generally lacks enough information to prove his identity.
D．Molecular Genealogy can be used to prove a relationship between individuals.
Which of the following would best summarize the authors comment on the book？
A．It hasn"t brought the desired result but contains useful knowledge.
B．It is quite boring without pictures the readers expect it to display.
C．It properly presents the outstanding work the IMF has completed.
D．It turns out to be a book introducing the historical work of the IMF.
请根据短文的内容，回答题。
Nice Name But She"s So Deadly
(1) More than a million people in the United States were told to leave their homes over the weekend as Hurricane (飓风) Dennis headed to the Gulf coast, after killing at least 15 people in the Caribbean Sea.＜br＞
(2) If you read the news often enough, you may notice that all hurricanes are given names. Why is that？ Remember, there can be more than one hurricane operating at one time. Without naming them, we could get confused about which storm we&39;re talking about.＜br＞
(3) For hundreds of years, hurricanes in the Caribbean were named after the particular religious day on which they occurred. One Australian meteorologist (气象学家) began giving women&39;s names to tropical storms at the end of the 19th century. In 1953, the US National Weather Service, which is responsible for tracking hurricanes and issuing warnings, began using female names for storms. By 1979, both women and men&39;s names were being used. One name for each letter of the alphabet (字母表) is selected, except for Q, U and Z.＜br＞
(4) So who decides which names are used each year？ The World Meteorological Organization uses six lists in rotation, so each list is reused every six years.＜br＞
(5) Here&39;s a list of the 2005 Atlantic hurricanes, according to the US National Hurricane Centre:＜br＞
Arlene, Bret, Cindy, Dennis, Emily, Franklin, Gert, Harvey, Irene, Jose, Katrina, Lee, Maria,Nate, Ophelia, Philippe, Rita, Stan, Tammy, Vince, Wilma.
Paragraph 1 __________ 查看材料
A.Reason for naming hurricanes
B.Warning of an approaching hurricane
C.Deadly women
D.History of naming hurricanes
E.Organization responsible for naming hurricanes
F.Ways to track hurricanes
请根据短文内容，回答题。
The Tough Grass that Sweetens Our Lives
Sugar cane was once a wild grass that grew in New Guinea and was used by local people for roofing their houses and fencing their gardens. Gradually a different variety evolved which contained sucrose (蔗糖) and was chewed on for its sweet taste. Over time, sugar cane became a highly valuable commercial plant, grown throughout the world. __________ (46)＜br＞
Sugar became a vital ingredient in all kinds of things, from confectionery (糖果点心 ) to medicine, and, as the demand for sugar grew, the industry became larger and more profitable.＜br＞
__________ (47) Many crops withered(枯萎)and died, despite growers&39; attempts to save them, and there were fears that the health of the plant would continue to deteriorate.＜br＞
In the 1960s, scientists working in Barbodos looked for ways to make the commercial species stronger and more able to resist disease. They experimented with breeding programmes, mixing genes from the more delicate, commercial type. __________(48) This sugar cane is not yet ready to be sold commercially, but when this happens, it is expected to be incredibly profitable for the industry.＜br＞
__________(49) Brazil, which produces one quarter of the world&39;s sugar, has coordinated an international project under Professor Paulo Arrudo of the Universidade Estaudual de Campinas in Sao Paulo. Teams of experts have worked with him to discover more about which parts of the genetic structure of the plant are important for the production of sugar and its overall health.＜br＞
Despite all the research, however, we still do not fully understand how the genes function in sugar cane __________ (50) This gene is particularly exciting because it makes the plant resistant to rust, a disease which probably originated in India, but is now capable of infecting sugar cane across the world. Scientist believes they will eventually be able to grow a plant which cannot be destroyed by rust.
第46题___________ 查看材料
A.Eventually， a commercial plant was developed which was 5 percent sweeter than before，but also much stronger and less likely to die from disease.
B.One major gene has been identified by Dr Angelique D"Hont and her team in Montpelier，France.
C.Sugar cane is now much more vigorous and the supply of sugar is therefore more guaranteed.
D.Since the 1960s， scientists have been analyzing the mysteries of the sugar cane"s genetic code.
E.The majority of the world"s sugar now comes from this particular commercial species.
F.Unfortunately， however， the plant started to become weaker and more prone to disease.
请根据短文的内容，回答题。
What Is the Coolest Gas in the Universe？
What is the coldest air temperature ever recorded on Earth？ Where was this low temperature recorded？ The coldest recorded temperature on Earth was -90℃, which __________ (51) in Antarctica (南极洲 ) in 1983.＜br＞
We encounter an interesting situation when we discuss temperatures in __________ (52).＜br＞
Temperatures in Earth orbit (轨道) actually range from about + 120℃ to -120℃. The temperature depends upon __________ (53) you are in direct sunlight or in shade. Obviously, -120℃ is colder than our body can __________ (54) endure.＜br＞
The space temperatures just discussed affect only our area of the solar __________ (55).Obviously, it is hotter closer to the Sun and colder as we travel __________ (56) from the Sun.＜br＞
Scientists estimate temperatures at Pluto are about -210℃. How cold is the lowest estimated temperature in the entire universe？ Again, it depends upon your __________ (57). We are taught it is supposedly __________ (58) to have a temperature below absolute zero, which is -273℃, at which atoms do not move. Two scientists, Cornell and Wieman, have successfully __________ (59)down a gas to a temperature barely above absolute zero. They won a Nobel Prize in Physics in 2001 for their work--not a discovery, in this case.＜br＞
Why is the two scientists&39; work so important to science？＜br＞
In the 1920s, Satyendra Nath Bose was studying an interesting __________ (60) about special light particles (微粒) we now call photons (光子). Bose had trouble __________ (61) other scientists to believe his theory, so he contacted Albert Einstein. Einstein&39;s calculations helped him theorize that atoms __________ (62) behave as Bose thought--but only at very cold temperatures.＜br＞
Scientists have also discovered that ultra-cold (超冷) atoms can help them make the world&39;s atomic clocks even __________ (63) accurate. These clocks are so accurate today they would only lose one second __________ (64) six million years! Such accuracy will help us travel in space because distance is velocity (速度) times time (d=υt). With the long distances involved in space__________ (65), we need to know time as accurately as possible to get accurate distance.＜
_________ 查看材料
A.operated
B.occurred
C.opened
D.offered
请根据短文内容，回答题。
Travel to Moon
The National Aeronautics and Space Administration (NASA) has announced plans to return people to the moon by 2018. "And this time," according to a NASA press release, “we&39;re going to stay."＜br＞
NASA wants to make a new spaceship for the missions using parts from the Apollo program,which first took people to the moon in 1969, and the space shuttle. NASA says the new Crew Exploration Vehicle (CEV) will be "affordable, reliable, and safe".＜br＞
The CEV will be able to hold four astronauts. The plan is to have the CEV dock (对接) in space with the lunar- the vehicle astronauts will use to land on the moon- which will be launched separately into space. The CEV will then travel to the moon and all four astronauts will walk on the moon.＜br＞
The first m, oon missions are expected to last up to seven days. Exploration and construction of a moon base will be the astronauts&39; top priorities (最优先考虑的事). NASA hopes to have a minimum of two moon missions a year starting in 2018. This will allow for quick moon base construction, constant scientific study, and training for future missions to Mars.
What is new in NASA‘s plan to return to the moon by 2018？ 查看材料
A.People will land find remain on the moon
B.Equipment will be carded and installed there
C.More CEVs will be made regularly
D.A special device will be used in landing
请根据短文内容，回答题。
Soot （煤烟灰） and Snow: a Hot Combination
New research from NASA scientists suggests emissions of black soot alter the way sunlight reflects off snow. According to a computer simulation, black soot may be responsible for 25 percent of observed global warming over the past century.＜br＞
Soot in the higher latitudes (纬度) of the Earth, where ice is more common, absorbs more of the sun&39;s energy and warmth than an icy, white background. Dark-colored black carbon, or soot, absorbs sunlight, while lighter colored ice reflects sunlight.＜br＞
Soot in areas with snow and ice may play an important role in climate change. Also, if snow and ice covered areas begin melting, the warming effect increases, as the soot becomes more concentrated on the snow surface. "This provides a positive feedback, as glaciers and ice sheets melt, they tend to get even dirtier," said Dr. James Hansen, a researcher at NASA&39;s Goddard Institute for Space Studies, New York.＜br＞
Hansen found soot&39;s effect on snow albedo (反照率), which may be contributing to trends toward early springs in the Northern Hemisphere, such as thinning Arctic sea ice and melting glaciers permafi:ost. Soot also is believed to play a role in changes in the atmosphere above the oceans and land.＜br＞
"Black carbon reduces the amount of energy reflected by snow back into space, thus heating the snow surface more than if there were no black carbon," Hansen said. Soot&39;s increased absorption of solar energy is especially effective in warming the world&39;s climate. "This forcing is unusually effective, causing twice as much global warming as a carbon-dioxide forcing of the same magnitude," Hansen noted.＜br＞
Hansen cautioned, although the role of soot in altering global climate is substantial, it does not alter the fact that greenhouse gases are the primary cause of climate warming during the past century. Such gases are expected to be the largest climate forcing for the rest of the century.＜br＞
The researchers found that observed warming in the Northern Hemisphere was large in the winter and spring at middle and high latitudes. These observations were coherent with the researchers&39; climate model situations, which showed some of the largest warming effects occurred when there were heavy snow cover and sufficient sunlight.＜
Which of the following statements of soot is NOT true？ 查看材料
A.It absorbs sun"s heat.
B.It is responsible for climate change.
C.It reflects sunlight.
D.It may account for a quarter of global warming over the past century.
