单项选择题A．It ended its 15 -year mission after it was pitched into the Pacific Ocean.B．It ended up in an unpopulated part of the Pacific some 1,800 miles southwest of Britain’s Pitcairn Islands.C．It occurred in the exact area that the Russian space agency had predicted, between Australia and Chile.D．Its fragments hit a fleet of 27 tuna boats fishing in the South Pacific Ocean.

单项选择题A．To help the construction of the country.B．To pay for the salary of the staff.C．To help pay debts.D．To redecorate the museum.