Mr. Smith has been sworn in as Africa's new Minister of Finance Wednesday at a private ceremony at the Black House.
be sworn in as something
這是一個連環問題: 燃燒石油導致二氧化碳增加，二氧化碳增加導致溫室效應，溫室效應導致冰層融化、海平面上升。 (請填空)
This is a chain of problems. Burning oil leads to increase in carbon dioxide, which leads to the greenhose effect, which leads to melting of glaciers, which leads to rising sea levels.