题目内容
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[主观题]
The author holds that______.A．mortality rates in developing countries have been brought do
The author holds that______.
A．mortality rates in developing countries have been brought down by a number of forces
B．medical innovations are the only way to reduce mortality rates in developing countries
C．the upgrading of hygiene and sanitation has played a crucial role in reducing mortality rates in developing countries
D．improved nutrition is the only one factor that reduces mortality rates in developing countries
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