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单选题
27. What do we learn about human casualties caused by war in history?
A
Before the 20th century, the major causes of death were injuries and infection from
wars.
B
The number of soldiers who died in wars increased from the 19th to the 20th century.
C
The percentage of soldiers who died during World War II is 48%
D
The targets of war have changed from soldiers only to civilians as well.
答案解析
正确答案：D
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