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General Cargo Rates are normally higher than Specific Commodity Rates in air cargo transportation. （）
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Currently there are some 20,000 chemicals in use, but the scientists only have detailed information around 1,000 of them.To see the advantages of GM food you have only to consider the recent press revelation that the average lettuce receives eleven pesticide applications before it reaches the supermarket shelf.I’m sure chemicals and their role in disease will become a big issue in the 21st century as the population of the developed world worries increasingly about its health.
The reason GM food will not go away is that we need a three-fold increase in food production by the year 2050 to keep pace with the world’s predicted population growth to ten or eleven billion.It’s not just a question of more mouths to feed either.What is often forgotten is that all these extra people will take up space, reducing the overall land available for agriculture.
The world has 800 million hungry people.Until now, food supplies have been increased by improved varieties, pesticides and artificial fertilizers: the green revolution.Now we’re on the edge of a new one: a genetic revolution.
It may well be that in the long term it is the developing world that benefits most from GM food.It is true that for the next years or so GM crops may be too expensive.
6. According to the passage, food supplies have been increased by all the following except_____________.
A.pesticides
B.artificial fertilizers
C.improved varieties
D.transportation
7.How many chemicals are still less familiar to the scientists?()
A.20,000.
B.1,000
C.19,000
D.21,000.
8.Why will people prefer GM food in the future?()
A.Because it uses less pesticides.
B.Because it is much cheaper.
C.Because the production is increased.
D.Because it is organic food.
9.Which of the following is NOT true?()
A.By 2050, the world population will grow to ten or eleven billion.
B.In the 21st century, GM food will take the place of conventional food.
C.More and more people will reduce the overall land available for farming.
D.More and more people will consume more food and occupy more space.
10.The author’s attitude towards GM food is _______.
A.negative
B.positive
C.critical
D.uncertain
The oldest and simplest method, then of describing differences in personality was to classify people according to types, and such a system is called a Typology. A famous example of this method was set forth in Greece about the year 400 BC.A physician named Hippocrates theorized that there were four fluids, or humors, in the body. Corresponding to each humor, he believed, there existed a definite type of personality.
The four humors were blood, yellow bile, black bile, and phlegm. A person in whom all four humors were in perfect balance had a harmonious personality. If a person had too much blood, he was called sanguine(血红色), or cheerful and optimistic. Someone with too much yellow bile was choleric, or irritable and easily angered. Too much black bile made a person melancholy, or depressed and pessimistic. An oversupply of phlegm caused a human being to be phlegmatic, or slow and unfeeling. Scientists have long since discarded Hippocrates’ fluid theory. But the names of the humors, corresponding to these temperaments, have survived and are still useful, to some extent, in describing personality.
Other features of people, such as their faces and physics, have also been used to classify personality. Today, however, personality theories and classifications may also include factors such as heredity(遗传特征), the environment, intelligence , and emotional needs. Psychology, biology, and sociology are involved in these theories. Because of the complexity of human personality, present day theories are often very different from one another. Psychologists vary in their ideas about what is most important in determining personality.
36.According to Hippocrates’ fluid theory, a man with too much phlegm will be ____.
A.optimistic B.easily angered C.unexcitable D.pessimistic
37.The main idea of this passage is about ____.
A.the complicated factors in determining one’s personality
B.Hippocrates’ fluid theory and its development
C.the past and today of personality classifications and theories
D.different personalities and their details
38.At present, psychologists ____.
A.have common opinion about personality theories and classifications
B.use biology, archaeology and sociology to study personality theories
C.have abandoned Hippocrates’ fluid theory entirely
D.all agree that human beings are characterized with complex personalities
39.The third paragraph mainly talks about ____.
A.Hippocrates’ fluid theory
B.scientists’ points of view on Hippocrutes’ fluid theory
C.Hippocrates’ fluid theory and its fate
D.defects in Hippocrates’ fluid theory
40.According to this passage the factors which are still NOT used to clas sify personality are ____.
A.one’s born features and needs of love and success
B.one’s height and weight
C.one’s hobbies and ideals
D.the environment and intelligence
A.value-creation
B.risk-taking
C.profit-making
D.cost-saving
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