[填空题]World leaders and environmentalists have talked about the need to preserve the forest for decades.

[填空题]World leaders and environmentalists have talked about the need to preserve the forest for decades.

[填空题]Different areas around the world have experienced similar effects of the climate change.

[填空题]Although most nations around the world have agreed upon GSM data transmission protocol for cellphones, the US has avoided official ______.

[单项选择]Kidnappings around the world have typically had one of two major goals: publicity for a local political cause or as a form of "fund-raising" for the kidnappers. Recently, kidnappings for political reasons have been on the decrease, whereas kidnapping for profit has seen a dramatic increase.
A prime example of this trend is in Colombia. Colombia is considered to be the kidnapping capital of the world, with rival guerrilla and paramilitary groups consistently abducting civilians including businessmen, tourists and aid workers. The ransom money obtained from these activities is used primarily to finance a 37-year civil war in Colombia. The U.S. State Department estimates that more than 3,000 people are kidnapped in Colombia each year. Most kidnap victims are Colombians who are either wealthy or who can at least come up with a few thousand dollars. Although the kidnappings are most often performed by political dissidents, the motivation for the kidnappings is usually money, not politi
A. the kidnappers consider it a pleasure to do harm to the victims
B. some rebel groups financed themselves through kidnapping
C. foreign countries have invested little in the Third World
D. the kidnappers know that frequently an insurance company will pay out big for the hostages