62。which of the following best completes the passage below?
At a recent conference on environmental threats to the North Sea, most participating countries favored uniform controls on the quality of effluents, whether or not specific environmental damage could be attributed to a particular source of effluent.what must ,of course, be shown, in order to avoid excessively restrictive controls, is that-----
A any uniform controls that are adopted are likely to be implemented without delay
B any substance to be made subject to controls can actually cause environmental damage
C the countries favoring uniform controls are those generating the largest quantities of effluents
.......
答案是B。我有点不懂这道题目，请DX指点。
thanks. understand now.
| 欢迎光临 ChaseDream (https://forum.chasedream.com/) | Powered by Discuz! X3.3 |