When Franklin Roosevelt died in office in April 1945, ______, hi

When Franklin Roosevelt died in office in April 1945, ______, his vice president, became president.
A、Harry Truman
B、Bill Cliton
C、George Bush
D、Barack Hussein Obama
【正确答案】：A
【题目解析】：When Franklin D. Roosevelt died in office in April 1945, Harry Truman, his vice president, became president.参见教材P215。