Earthquakes are the most lethal of all natural disasters. What causes them Geologists explain them in terms of a theory known as plate tectonics. Continents are floating apart from each other, this is referred to as the continental drift. About sixty miles below the surface of the sea, there is a semimolten bed of rock over which plates, or slabs, carry continents and sea floors at a rate of several inches a year. As the plates separate from each other, a new sea floor is formed by the molten matter that was formerly beneath. Volcanic islands and large mountain ranges are created by this type of movement. The collision of plates causes geological instability such as that in California called the San Andreas Fault, located between the Pacific and North American plates. The plates there are constantly pushing and pulling adjacent plates, thereby creating constant tremors and a potential for earthquakes in the area.
Geologists would like to be able to predict earthquakes acc
A. employing amateur seismologists
B. observing professional geologists
C. watching animals, wells, and radioactive gas
D. evacuating the population
| Of all the areas of learning the most
important is the development of attitudes. Emotional reactions as well as
logical thought processes affect the behavior of most people. "The burnt child fears the fire" is one instance. Another is the rise of despots like Hitler. Both of these examples also point up the fact that attitudes stem from experience. In the one case the experience was direct and impressive, in the other case it was indirect and cumulative. The Nazis were formed largely by the speeches they heard and the books they read. The classroom teachers in the elementary school are in a strategic position to influence attitudes. This is true partly because children acquire attitudes from those adults whose opinion they respect. Another reason is that pupils often delve somewhat deeply into a subject in school that has only been touched upon A. the development of attitudes is most important B. people’s behavior can be shaped by direct or indirect experience C. conscious instruction is important in shaping people’s behavior D. unpleasant experience leaves a greater impression on people [单项选择]All else equal, which of the following would most likely cause a firm's price-earnings ratio to decline（）
A. The level of inflation is expected to decline. B. The dividend payout ratio increases. C. The yield on Treasury bills increases. [单项选择]All else being equal, which of the following most likely increase credit quality A company decreases its:（）
A. margin stability. B. retained cash flow. C. dividend payout ratio. [单项选择]______ is the most important of all American crops.
A. Wheat B. Corn C. Cotton D. Rice [简答题]We all know that the most powerful force in our lives is love. In addition to providing us with soul-warming companionship, the emotion of love is truly inspiring.
Of course, the facts of our lives tell a somewhat sad story. We have a very hard time making love last. The divorce rate in the U.S. is still around 50 percent. That figure doesn’t even cover the many couples that live together without marriage and whose unions are even more likely to dissolve.
Relationships fail because people have the misconception about what to expect in marriage. The fantasy is that everything will be wonderful as long as you find the perfect person –your missing half . But marriage is a team sport . It’s one team with two people , with two different minds . The difficulty is that these two people disagree all the time . They need to know nondestructive ways of expressing differences and must also be prepared for the inevitable disappointments that come from living with another person.
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