更多"Why were the scientists who said Ne"的相关试题:
[填空题]Why were the scientists who said Newton’s ideas had delayed the scientific progress wrong
[简答题]S3. Why were the scientists who said Newton’s ideas had delayed the scientific progress wrong
[填空题]Those who fought against Darwin’s ideas were the men of
[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 c
A. quick responses.
B. energy efficiency.
C. great initiatives.
D. scientific analysis.
[单项选择]The police were tracking the criminal who was said ( ) in the forest.
A. to have hidden
B. to be hiding
C. to hiding
D. to hide
[单项选择]How many people were said to be injured at least( ).
A. 342.
B. 900.
C. 1242.
D. 1 million.
[填空题]Two hundred people were said to (kill) ______ in the earthquake.