[单项选择]Economic theory would predict that a fall in the price of a commodity would lead to an increase in ______.
A. assumption
B. resumption
C. consumption
D. presumption

[单项选择]Economic theory would predict that a fall in the price of a commodity would lead to an increase in ______.
A. assumption
B. resumption
C. consumption
D. presumption

[单项选择]The space animal theory would seem to indicate that ______.
A. living creatures are extremely adaptable
B. life in space is impossible for man
C. the fittest creatures always survive
D. life cannot exist in the depth of the sea

[单项选择]Without air resistance, all objects would fall at the same speed ________ their weight.
A. regardless of
B. instead of
C. according
D. despite of

[单项选择]Students who complete the quiz on economic theory ______ referring to their notes will receive 10 extra points.
A. despite
B. whereas
C. without
D. because

[单项选择]His administration's economic policy would focus un ______ inflation and reducing the budget deficit.
A. winking at
B. polishing off
C. shaking down
D. reining in

[单项选择]I would like to say that a theory is essentially an abstract, symbolic representation of reality.
A. what it is conceived
B. that is conceived
C. that is being conceived of
D. what is conceived of

[单项选择]Speech act theory is an important theory in the ______ study of language. A. semantic B. pragmatic B. phonetic D. morphological

[单项选择]It is difficult to accurately predict earthquakes because______.
A. earthquakes may take place anywhere, anytime
B. earthquakes may happen unexpectedly under the sea
C. earthquakes may take place while people are asleep
D. the taking place of earthquakes involves many factors

[单项选择]

Text 4
The recent, apparently successful prediction by mathematical models of an appearance of El Nifio—the warm ocean current that periodically develops along the Pacific coast of South America -- has excited researchers. Jacob Bjerkness pointed out over 20 years ago how winds might create either abnormally warm or abnormally cold water in the eastern equatorial Pacific. Nonetheless, until the development of the models no one could explain why conditions should regularly shift from one to the other, as happens in the periodic oscillations between appearance of the warm El Nifio and the cold so-called anti-El Nifio. The answer, al least if the current model that links the behavior of the ocean to that of the atmosphere is correct, is to be found in the ocean.
It has long been known that during an El Niflo, two conditions exist: (1) unusually warm water extends along the eastern Pacific, principally along the coasts of Ecuador and Peru, and (2) winds b
A. introduction to a new explanation of a physical phenomenon.
B. explanation of the difference between two related physical phenomena.
C. illustration of the limitations of applying mathematics to complicated physical phenomena.
D. indication of the direction that research into a particular physical phenomenon should take.