B.contact C.agreement D.an agreement 参考答案:D 参考解析: 考查词汇辨析。当世界各国领导人签署了1987年《蒙特利尔议定书》时,氯氟烃开始被禁止。contact接触联系,agreement协议。根据句意排除掉AB,因为协议书是可数名词,因此必须加用冠词,故本题正确答案选D。
C项和D项的名词相同，但是少了个不定冠词an. agreement是可数名词，不能不加冠词就以单数形式出现。因此选D项，签署一份协议。
Signed on September 16, 1987, the agreement is credited for leading the overall ozone layer to recovery. As of September 2006, the size of hole in the ozone layer covered an area as large as North America. The author cites the success of the Montreal Protocol in reducing the consequences ...
In order to protect the safety of the earth, the international community in 1987 signed the Montreal protocol on ozone depleting substances (hereinafter referred to as "protocol"), decided to gradually reduce and control the production and use of ozone depleting substance (ODS). Amendment by the ...
百度试题 结果1 题目CFCs were banned when world leaders signed ___called the Montreal Protocol in 1987. A. a contact B. contact C. agreement D. an agreement 相关知识点: 试题来源: 解析 D 反馈 收藏
Details were defined in the Montreal Protocol on Substances that Deplete the Ozone Layer that was signed in 1987 and ratified in 1989. The substances defined are CFC, HCFC, HBFC, halons, carbon tetrachloride, methyl chloroform, and methyl bromide. The phase-out time for these was defined in ...
In 1987, an international agreement called the Montreal Protocol was signed to bring an end to the destruction of the ozone layer by chlorofluorocarbons (CFCs). Stratosphere. Image Credit: Willpower. The Montreal Protocol currently seems to be the first international treaty to effectively decelerate ...
The Protocol was signed at the dawn of a period of growing interest in global environmental issues. None of the subsequent international agreements has been as successful as the Montreal Protocol in creating the incentives and mechanisms for change, in part due to different political, scientific ...
The Montreal Protocol on Substances that Deplete the Ozone Layer, signed in 1987 by more than150 nations, has attained its short-term goals: it has decreased the rate of increase in amounts ofmost ozone-depleting chemicals reaching the atmosphere and has even reduced the atmosphericlevels of ...
Montreal Protocol, officially the Protocol on Substances That Deplete the Ozone Layer, treaty signed on Sept. 16, 1987, at Montreal by 25 nations; 197 nations are now parties to the accord. The protocol set limits on the production of