更多"He ______that a combination of rece"的相关试题:
[单项选择]He ______that a combination of recent oil discoveries and the advance of new technology will lead to a decline in the price of crude oil.
A. predicts
B. compels
C. arranges
D. disputes
[单项选择]The recent surge in oil prices to roughly $55 a barrel teaches some useful lessons. One is that surprises happen. A year ago futures contracts predicted today’s price would be $25. A second is that the economy has grown less vulnerable to oil "shocks". Compared with 1973, we now use almost 50 percent less energy for each dollar of output. New industries (software, theme parks) need less than the old (steel, chemicals). But the largest lesson is depressingly familiar. Americans won’t think realistically about oil. We consider cheap fuel a birthright, and when we don’t get it, we whine—rather than ask why or what we should do.
If prices rise, we blame a conspiracy of greedy oil companies, OPEC or someone. The reality is usually messier. Energy economist Philip Verleger Jr. attributes the present price run-up to massive miscalculation. Oil companies and OPEC underestimated global demand, particularly from China. Since 2001 China’s oil use has jumped 36 percent. This error led OPEC
A. George Bush’ s
B. john Kerry’s
C. neither George Bush’s nor John Kerry’s
D. both George Bush’s and John Kerry’s
[填空题]In recent years, oil______ (substitute) for certain natural materials.
[单项选择]In recent years, researches have suggested more health value from vitamin D than had once been thought.
Vitamin D is (62) naturally in the blood. Sunlight is a (63) source. It is also found in some foods. Vitamin D helps to increase levels of calcium in the blood. It helps build strong bones and teeth.
It also (64) to do more than just protect against rickets (软骨病). That serious bone disease was the reason why vitamin D was added to milk. Rickets is now (65) in the western world. But it is still a common childhood disease in developing countries. Rickets can and is also (66) to cause bone pain and weakness, teeth problems and muscle (67)
According to the study by the Harvard School of Public Health, Vitamin D might protect against multiple sclerosis (硬化症), also called MS.
MS is a (68) disease of the central nervous system that (69) about two million people around the worl
A. do
B. get
C. make
D. gain