更多"Even if all government money for re"的相关试题:
[填空题]Even if all government money for research were cut off, the force of competition ______(仍将带来技术的进步).
[单项选择]We were all there when the accident occurred.
A. happened
B. broke
C. spread
D. appeared
[单项选择]If good intentions and good ideas were all it took to save the deteriorating atmosphere, the planet’s fragile layer of air would be as good as fixed. The two great dangers threatening the blanket of gases that nurtures and protects life on earth--global warming and the thinning ozone layer--have been identified. Better yet, scientists and policymakers have come up with effective though expensive countermeasures.
But that doesn’t mean these problems are anywhere close to being solved. The stratospheric ozone layer, for example, is still getting thinner, despite the 1987 international agreement known as the Montreal Protocol, which calls for a phaseout of chlorofluorocarbons (CFCs) and other ozone-depleting chemicals by the year 2006.
CFCs--first fingered as dangerous in the 1970s by Sherwood Rowland and Mario Molina, two of this year’s Nobel--prizewinning chemists—have been widely used for refrigeration and other purposes. If uncontrolled, the CFC assault on the ozone layer co
A. "get over."
B. "pull through."
C. "turn up."
D. "come around."
