单选题"Forget football" in Paragraph 1 suggests that football has been ______.
单选题The Bush Junta is using the of______ Hurricane katrina to cut the wages of people desperately trying to rebuild their lives and their communities. A. dismantlement B. devastation C. scuttle D. wreckage
单选题When I was a child in Sunday school, I would ask searching questions like "Angels can fly up in heaven, but how do clouds hold up pianos, and get the same puzzling response about how that was not important, what was important was that Jesus died for our sins and if we accepted him as our savior, when we died, we would go to heaven, where we'd get everything we wanted. Some children in my class wondered why anyone would hang on a cross with nails stuck through his hands to help anyone else; I wondered how Santa Claus knew what I wanted for Christmas, even though I never wrote him a letter. Maybe he had a tape recorder hidden in every chimney in the world. This literal-mindedness has stuck with me; one result of it is that I am unable to believe in God. Most of the other atheists I know seem to feel freed or proud of their unbelief, as if they have cleverly refused to be sold snake oil. My husband, who was reared in a devout Catholic family, has served as an altar boy. So other than baptizing our son to reassure our families, we've skated over the issue of faith. Some people believe faith is a gift; it's a choice, a matter of spiritual discipline. I have a friend who was reared to believe, and he does. But his faith has wavered. He has struggled to hang onto it and to pass it along to his children. Another friend of mine never goes to church because she's a single mother who doesn't have the gas money. But she once told me a day when she was washing oranges as the sun streamed onto them. As she peeled one, the smell rose to her face, and she felt she received the Holy Spirit. "He sank into my bones," she recounted. "I lifted my palms upward, feeling filled with love. " Being no theologian, and not even a believer, I am not in a position to offer up theories, but mine is this: people who receive faith directly, as a spontaneous combustion of the soul, have fewer questions. They have been sparked with a faith that is more unshakable than that of those who have been taught.
单选题Cell membranes act as barriers to most, but not all, molecules. Development of a cell membrane that could allow some materials to pass while constraining the movement of other molecules was a major step in the evolution of the cell. Cell membranes are differentially permeable barriers separating the inner cellular environment from the outer cellular (or external) environment.
Water potential is the tendency of water to move from an area of higher concentration to one of lower concentration. Energy exists in two forms: potential and kinetic. Water molecules move according to differences in potential energy between where they are and where they are going. Gravity and pressure are two enabling forces for this movement. These forces also operate in the hydrologic (water) cycle. Remember in the hydrologic cycle that water runs downhill (likewise it falls from the sky, to get into the sky it must be acted on by the sun and evaporated, thus needing energy input to power the cycle).
Diffusion is the net movement of a substance (liquid or gas) from an area of higher concentration to one of lower concentration. You are on a large (10 ft x 10 ft x 10 ft) elevator. An obnoxious individual with a lit cigar gets on at the third floor with the cigar still burning. You are also unfortunate enough to be in a very tall building and the person says "Hey we"re both going to the 62nd floor!" Disliking smoke you move to the farthest comer you can. Eventually you are unable to escape the smoke! An example of diffusion in action. Nearer the source the concentration of a given substance increases. You probably experience this in class when someone arrives freshly doused in perfume or cologne, especially the cheap stuff.
Since the molecules of any substance (solid, liquid, or gas) are in motion when that substance is above absolute zero (0 degrees Kelvin or -273 degrees C), energy is available for movement of the molecules from a higher potential state to a lower potential state, just as in the case of the water discussed above. The majority of the molecules move from higher to lower concentration, although there will be some that move from low to high. The overall (or net) movement is thus from high to low concentration. Eventually, if no energy is input into the system the molecules will reach a state of equilibrium where they will be distributed equally throughout the system.
The cell membrane functions as a semi-permeable barrier, allowing a very few molecules across it while fencing the majority of organically produced chemicals inside the cell. Electron microscopic examinations of cell membranes have led to the development of the lipid bilayer model (also referred to as the fluid-mosaic model). The most common molecule in the model is the phospholipid, which has a polar (hydrophilic) head and two nonpolar (hydrophobic) tails. These phospholipids are aligned tail to tail so the nonpolar areas form a hydrophobic region between the hydrophilic heads on the inner and outer surfaces of the membrane. This layering is termed a bilayer since an electron microscopic technique known as freeze-fracturing is able to split the bilayer.
单选题In such a changing, complex society formerly simple solutions to informational needs become complicated. Many of life's problems which were solved by asking family members, friends or colleagues are beyond the capability of the extended family to resolve. Where to turn for expert information and how to determine which expert advice to accept are questions facing many people today. In addition to this, there is the growing mobility of people since World War II. As families move away from their stable community, their friends of many years, their extended family relationships, the informal flow of information is cut off, and with it the confidence that information will be available when needed and will be trustworthy and reliable. The almost unconscious flow of information about the simplest aspects of living can be cut off. Thus, things once learned subconsciously through the casual communications of the extended family must be consciously learned. Adding to societal changes today is an enormous stockpile of information. The individual now has more information available than any generation, and the task of finding that one piece of information relevant to his or her specific problem is complicated, time-consuming and sometimes even overwhelming. Coupled with the growing quantity of information is the development of technologies which enable the storage and delivery of more information with greater speed to more locations than has ever been possible before. Computer technology makes it possible to store vast amounts of data in machine-readable files, and to program computers to locate specific information. Telecommunication developments enable the sending of messages via television, radio, and very shortly, electronic mail to bombard people with multitudes of messages. Satellites have extended the power of communications to report events at the instant of occurrence. Expertise can be shared world wide through teleconferencing, and problems in dispute can be settled without the participants leaving their homes and/or jobs to travel to a distant conference site. Technology has facilitated the sharing of information and the storage and delivery of information, thus making more information available to more people. In this world of change and complexity, the need for information is of greatest importance. Those people who have accurate, reliable up-to-date information to solve the day-to-day problems, the critical problems of their business, social and family life, will survive and succeed. "Knowledge is power" may well be the truest saying and access to information may be the most critical requirement of all people.
单选题
The gravitational pull of the Earth and
moon is important to us as we attempt to conquer more and more of outer-space.
Here's why. As a rocket leaves the Earth, the pull of the Earth
on it becomes less and less as the rocket roars out into space. If you imagine a
line between the Earth the pull of the Earth and the moon, there is a point
somewhere along that line, nearer to the moon than to the Earth, at which the
gravitation pull of both the Earth and the moon on an object is just about
equal. An object placed on the moon side of that point would be drawn to the
moon. An object placed on the Earth side of that point would be drawn to the
Earth. Therefore, a rocket need be sent only to this "point of no return" in
order to get it to the moon. The moon's gravity will pull it the rest of the
way. The return trip of the rocket to Earth is, in some ways,
less of a problem. The Earth's gravitational field reaches far closer to the
moon than does the moon's to Earth. Thus it will be necessary to fire an
Earthbound rocket only a few thousand miles away from the moon to reach a point
where the rocket will drift to earth under the Earth's gravitational
pull. The problem of rocket travel is not so much concerned with
getting the rocket into space as it is with guiding the rocket after it leaves
the Earth's surface. Remember that the moon is constantly circling the Earth. A
rocket fired at the moon and continuing in the direction in which it was fired
would miss the moon by a wide margin and perhaps continue to drift out into
space until "captured" in another planet's gravitational field. to reach the
moon, a rocket must be fired toward the point where the moon will be when the
rocket has traveled the required distance. This requires precise calculations of
the speed and direction of the rocket and of the speed and direction of the
moon. For a rocket to arrive at a point where the moon's gravity
will pull it the rest of the way, it must reach a speed called velocity of
escape. This speed is about 25, 000 miles per hour. At a speed less than this, a
rocket will merely circle the Earth in an orbit and eventually fall back to
Earth.
单选题He made a Udispatch/U for a specific purpose.
单选题______is often the case with a new idea, much preliminary activity and optimistic discussion produced no concrete proposals.(北京大学2008年试题)
单选题It can be inferred that the high rate of dropouts lies in
单选题
单选题The new president hoped to______ new procedures to save money.
单选题{{B}}Passage Three{{/B}}
Kevin Rogers used to be my boss.
At that time he was a hardworking, up-and-coming businessman and a real
slave-driver, always telling us we had to sell more and more. As soon as I
could, I got a job with another company. The last time I saw Rogers was more
than ten years ago. At least that's what I thought until last Thursday. But now
I'm not so sure. I was on my way back to my office in the center
of town. There is a small park nearby which I sometimes walk through after
lunch. It was almost empty, except for an unshaven, shabby-looking man on
one of the benches. He looked about fifty years old and was wearing an old, grey
overcoat. It was a cold, wintry day, and he was shivering. "It's
been a long time since I had a meal. Can you help me?" he said.
There was something about his voice that sounded familiar. I gave
him a few coins and he mumbled something about being grateful. As he
stumbled past me, I looked at his face closely. I wondered where I had
seen him before. Then it hit me. Could it possibly be "'? No!
Impossible, I thought I watched him walking away. He was the same height as
Rogers but looked a lot thinner than I remembered. Then, as he left the park and
turned down the street, I caught sight of his face again, this time in profile.
Then nose was the same as Rogers, too. I almost followed him but something made
me stop. I just couldn't be sure. But the resemblance was very close.
Yesterday I run into someone who had worked for Rogers at the same time I
did, and had stayed no longer. I started telling him about the man I had seen in
the park. For a moment I thought it was our old boss. The voice, the nose, and
even the face were just like Rogers. But it couldn't have been. "Rogers must be
the director of a big company by now," I said. My ex-colleague
shook his head, "I thought you knew." "Knew? Knew what? What are
you talking about?" "Rogers was sent to prison six years ago.
He's sleeping on park benches and begging money from passers-by."
单选题The ideological make-up of the unions is now______ different from what it had been.(2010年四川大学考博试题)
单选题In times of financial depression, their market manager turned his ______ from this company to their main competitor. A. fright B. allegiance C. destination D. allowance
单选题What he had in mind ______to nothing less than a total reversal of the
traditional role of the executive.
A.contributed
B.dedicated
C.amounted
D.added
单选题{{B}}Directions:{{/B}} There are 5 reading passages in this part. 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 and
mark your answer on the ANSWER SHEET by blackening the corresponding letter in
the brackets.
While the polltakers are most widely
known for their political surveys, the greatest part of their work is on behalf
of American business. There are three kinds of commercial surveys. One is a
public relations research, such as that done for banks, which finds out how the
public feels about a company. Another is employee-attitude research, which
learns from rank-and-file workers how they really feel about their jobs and
their bosses, and which can avert strikes by getting to the bottom of grievances
quickly. The third, and probably most spectacular, is marketing research,
testing public receptivity to products and designs. The investment a company
must make for a new product is enormous--$ 5,000,000 to $ 10,000,000, for
instance, for just one new product. Through the surveys a company can discover
in advance what objections the public has to competing products, and whether it
really wants a new one. These surveys are actually a new set of signals
permitting better communication between business and the general public--letting
them talk to each other. Such communication is vital in a complex society like
our own. Without it, we would have not only tremendous waste but the industrial
anarchy of countless new unwanted products appearing and
disappearing.
单选题To be______ I couldn't understand what he was getting at. If you wanted to know you' d better ask someone else.(2004年西南财经大学考博试题)
单选题
单选题One of the most interesting inhabitants of our world is the bee, an insect which is indigenous to all parts of the globe except the polar regions.
单选题Only by shouting at the top of her voice ______.