شرکت در آزمون آنلاین انگلیسی 3 - انگلیسی 3 | آزمون شماره 10481

The gases, especially methane and carbon dioxide, ………. the Earth’s heat radiation and thus warm the surface.

It is said that the reduction of nuclear defenses can cause an increase in the … of a nuclear war in the future.

Is America a place where different people and ideas exist together the most? Although …A… in many other ways, America is less culturally diverse than many other countries. In a 2013 German study, for instance, researchers used language and origins as signals of …B… . The U.S. ranked in the middle; some countries such as Chad, South Africa and Papua New Guinea with their myriad tribes, languages, distinct cultures and religions ranked as the most diverse. The least diverse examples …C… Argentina and Rwanda, the latter because of the genocide (killing) of the Tutsi minority in the 1990s. A 2003 study in the Journal of Economic Growth showed …D… results, ranking mostly African countries as the most culturally  diverse.

A-