单选题
In his research, Gerald Wilde finds that technological advances and increases in safety standards have ______.
A、
helped solve the problem of so high death rate
B、
oddly accounted for mortality rates in the past century
C、
reduced mortality rates for violent and accidental deaths
D、
achieved no effect in bringing down the number of deaths
【正确答案】
D
【答案解析】
[解析] 本题题干出现在第二段第二句，意思是：“虽然有技术进步和安全标准的提高，西方世界的暴力和意外死亡率在整个世纪中保持着奇怪的恒定(static)”，由此可以判断，技术进步和安全标准的提高并未降低各种原因的死亡人数，故选D。
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