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B
Can you imagine traveling to work in a one-man submarine? Some scientists believe that some day one-man submarines will be as numerous (许多) as automobiles are today. A famous French driver says, “One day soon, men will walk on the ocean floor as they do on the street!” Perhaps during your lifetime people will travel, work, and live in the sea.
If human beings want to live in the ocean, many human problems will need to be studied first. Some of these problems, similar to those of living in outer space, are pressure, lack of oxygen and weightlessness. Many questions remain unanswered．For example, can our blood adjust itself to underwater surroundings? What will happen to our muscle if we live in the water very long? Scientists are searching for answers.
Perhaps in the future man will live in the sea, away from the crowded and noisy cities on land．The sea has plenty of space, not only for floating communities (团体) and parks, but also for storing supplies and for underwater travel.
Some scientists believe that ocean living will benefit man in more than physical ways. In the freedom and beauty of the deep sea, man may find new sources of joy.
60．According to the passage, which of the following is true?
A．Man will live in the sea just like living on the earth in time.
B．Human beings can now freely walk on the ocean floor just like walking on the street.
C．There are as many submarines as automobiles in the ocean.
D．A famous French driver found a safe way to travel to the ocean floor.
61．If human beings want to live in the ocean, _____.
A．problems such as pressure, lack of oxygen and weightlessness have to be solved
B．people have to answer many questions asked by scientists
C．underwater surroundings must be improved to fit the human bodies
D．human muscle must be exposed in the water for a long time
62．Which of the following might not be the reason for the people who want to live in the ocean?
A．The sea has plenty of space.
B．The cities on land are crowded, noisy and polluted.
C．Ocean living will do good to them in physical ways and spiritual ways.
D．There are communities and parks on the ocean floor.
63．What’s the best title of the passage?
A．The Use of One-man Submarine B．Living Things in the Ocean
C．Ocean Living D．Beauty of Ocean Floor
查看习题详情和答案>>B
Can you imagine traveling to work in a one-man submarine? Some scientists believe that some day one-man submarines will be as numerous (许多) as automobiles are today. A famous French driver says, “One day soon, men will walk on the ocean floor as they do on the street!” Perhaps during your lifetime people will travel, work, and live in the sea.
If human beings want to live in the ocean, many human problems will need to be studied first. Some of these problems, similar to those of living in outer space, are pressure, lack of oxygen and weightlessness. Many questions remain unanswered．For example, can our blood adjust itself to underwater surroundings? What will happen to our muscle if we live in the water very long? Scientists are searching for answers.
Perhaps in the future man will live in the sea, away from the crowded and noisy cities on land．The sea has plenty of space, not only for floating communities (团体) and parks, but also for storing supplies and for underwater travel.
Some scientists believe that ocean living will benefit man in more than physical ways. In the freedom and beauty of the deep sea, man may find new sources of joy.
60．According to the passage, which of the following is true?
A．Man will live in the sea just like living on the earth in time.
B．Human beings can now freely walk on the ocean floor just like walking on the street.
C．There are as many submarines as automobiles in the ocean.
D．A famous French driver found a safe way to travel to the ocean floor.
61．If human beings want to live in the ocean, _____.
A．problems such as pressure, lack of oxygen and weightlessness have to be solved
B．people have to answer many questions asked by scientists
C．underwater surroundings must be improved to fit the human bodies
D．human muscle must be exposed in the water for a long time
62．Which of the following might not be the reason for the people who want to live in the ocean?
A．The sea has plenty of space.
B．The cities on land are crowded, noisy and polluted.
C．Ocean living will do good to them in physical ways and spiritual ways.
D．There are communities and parks on the ocean floor.
63．What’s the best title of the passage?
A．The Use of One-man Submarine B．Living Things in the Ocean
C．Ocean Living D．Beauty of Ocean Floor
查看习题详情和答案>>A "lost tribe" that reached America from Australia may have been the first Native Americans, according to a new theory.
If proved by DNA evidence, the theory will break long established beliefs about the southerly migration of people who entered America across the Bering Strait, found it empty and occupied it.
On this theory rests the belief of Native Americans to have been the first true Americans. They would be classified to the ranks of escapee, beaten to the New World by Aboriginals (土著人) in boats.
To a European, this may seem like an academic argument, but to Americans it is a philosophical question about identity (身份), Silvia Gonzales, of Liverpool University said .
Her claims are based on skeletons found in the California Peninsula of Mexico that have skulls (头骨) quite unlike the broad Mongolian features of Native Americans. These narrow-skulled people have more in common with southern Asians, Aboriginal Australians and people of the South Pacific Region.
The bones, stored at the National Museum of Anthropology (人类学) in Mexico City, have been carbon-dated and one is 12,700 years old, which places it several thousand years before the arrival of people from the North. "We think there were several migration waves into the Americas at different times by different human groups," Dr. Gonzales said． "The timing, route and point of origin of the first colonization of the Americas remains a most contentious topic in human evolution."
But comparisons based on skull shape are not considered conclusive by anthropologists, so a team of Mexican and British scientists, backed by the Natural Environment Research Council, has also attempted to take out DNA from the bones. Dr. Gonzales declined yesterday to say exactly what the results were, as they need to be checked, but indicated that they were consistent（一致） with an Australian origin.
It is generally considered that the first Native Americans came from _____.
A．North Asia B．Australia C．South Pacific D．South Asia
The skeletons found in the California Peninsula of Mexico have _____.
A．the broad skull shape
B．the narrow skull shape
C．different features of Aboriginal Australians
D．the same features of Native Americans
The underlined “contentious” is similar in meaning to “_____”.
A．likely to cause great interest B．difficult to solve
C．well-known to all D． likely to cause argument
Which of the following statements is true according to the text?
A．Research on skulls can draw an exact conclusion.
B．DNA tests have proved the fact that the first Native Americans came from Australian.
C．Scientists are still not sure about the origin of the Native Americans.
D．People began to enter America across the Bering Strait about 12,700 years ago.
查看习题详情和答案>>A recent study, while showing a generally positive attitude toward science, also suggests a widespread worry that it may be “running out of control”．This idea is dangerous．
Science can be a force for evil as well as for good．Its applications can be channeled either way, depending on our decisions．The decisions we make, personally or collectively, will determine the outcomes of science．But here is a real danger．Science is advancing so fast is so strongly influenced by businesses that we are likely to believe whatever decisions we come to will make little difference．And, rather than fighting for the best possible policies, we may step back and do nothing．
Some people go even further．They say that despite the moral and legal objections （反对）, whatever is scientifically possible will be done ——somewhere, sometime．They believe that science will get out of control in the end．This belief is dangerous too, because it a fuels sense of hopelessness and discourages them from making efforts to build a safer world．
In our interconnected world, the lack of agreement in and of the world of science can lead to the failure to control the use of science．Without a common understanding, the challenges of “controlling” science in this century will be really tough．Take human cloning for example．Despite the general agreement among scientists on its possible huge impact （影响） on traditional moral values, some countries still go ahead with the research and development of its related techniques．The outcomes are hard to predict．
Therefore, discussions on how science is applied should be extended far beyond scientific societies．Only through the united efforts of people with hope, can we be fully safe against the misuse of science and can science best serve mankind in the future．
What can we conclude from the recent study?
A．People think highly of science．
B．People hold mixed opinions about science．
C．Science is getting dangerously out of control．
D．Science is used for both good and bad purposes．
According to the passage, what will happen if we hold that science is getting beyond control?
A．The development of science will hopelessly slow down．
B．Businesses will have even greater influence on science．
C．The public will lose faith in bringing about a bright future．
D．People will work more actively to put science under control．
The discussion should reach beyond scientific societies because __________．
A．scientists have failed to predict the outcomes
B．the ties between different areas need strengthening
C．united efforts are necessary for the development of science
D．people need to work together to prevent the bad use of science
What is the main idea of the passage?
A．Science and its applications bring us many dangers．
B．The development of science mostly lies in people’s attitudes．
C．Mankind can largely take control of science with their efforts．
D．The future of science will be influenced by the dangerous ideas．
查看习题详情和答案>>D
Next time a customer comes to your office, offer him a cup of coffee. And when you’re doing your holiday shopping online, make sure you’re holding a large glass of iced tea. The physical sensation(感觉) of warmth encourages emotional warmth, while a cold drink in hand prevents you from making unwise decisions—those are the practical lesson being drawn from recent research by psychologist John A. Bargh.
Psychologists have known that one person’s perception(感知) of another’s “warmth” is a powerful determiner in social relationships. Judging someone to be either “warm” or “cold” is a primary consideration, even trumping evidence that a “cold” person may be more capable. Much of this is rooted in very early childhood experiences, Bargh argues, when babies’ conceptual sense of the world around them is shaped by physical sensations, particularly warmth and coldness. Classic studies by Harry Harlow, published in 1958, showed monkeys preferred to stay close to a cloth “mother” rather than one made of wire, even when the wire “mother” carried a food bottle. Harlow’s work and later studies have led psychologists to stress the need for warm physical contact from caregivers to help young children grow into healthy adults with normal social skills.
Feelings of “warmth” and “coldness” in social judgments appear to be universal. Although no worldwide study has been done, Bargh says that describing people as “warm” or “cold” is common to many cultures, and studies have found those perceptions influence judgment in dozens of countries.
To test the relationship between physical and psychological warmth, Bargh conducted an experiment which involved 41 college students. A research assistant who was unaware of the study’s hypotheses(假设), handed the students either a hot cup of coffee, or a cold drink, to hold while the researcher filled out a short information form: The drink was then handed back. After that, the students were asked to rate the personality of “Person A” based on a particular description. Those who had briefly held the warm drink regarded Person A as warmer than those who had held the iced drink.
“We are grounded in our physical experiences even when we think abstractly,” says Bargh.
According to Paragraph 1, a person’s emotion may be affected by ______.
A. the visitors to his office B. the psychology lessons he has
C. his physical feeling of coldness D. the things he has bought online
The author mentions Harlow’s experiment to show that ______.
A. adults should develop social skills B. babies need warm physical contact
C. caregivers should be healthy adults D. monkeys have social relationships
In Bargh’s experiment, the students were asked to ______.
A. evaluate someone’s personality B. write down their hypotheses
C. fill out a personal information form
D. hold coffee and cold drink alternatively
We can infer from the passage that ______.
A. abstract thinking does not come from physical experiences
B. feelings of warmth and coldness are studied worldwide
C. physical temperature affects how we see others
D. capable persons are often cold to others
What would be the best title for the passage?
A. Drinking for Better Social Relationships.
B. Experiments of Personality Evaluation.
C. Developing Better Drinking Habits.
D. Physical Sensations and Emotions.
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