听力原文： WHO officials say most of the deaths result from lack of skilled care during pre

听力原文： WHO officials say most of the deaths result from lack of skilled care during pregnancy and childbirth and lack of clean conditions. (29) Many babies would survive with safe birthing methods, good nutrition, vaccines against disease and good care at home. The disease AIDS is also an increasing threat to both mothers and their children. Experts say many deaths could be prevented by using medicines during childbirth that prevent mothers from passing the AIDS virus to their babies. The WHO says governments and the international community need to make the health of women and children a more important issue. Last year, nations approved Millennium Development Goals for the year 20(30) They agreed to work to reduce the number of women dying in childbirth by three quarters. They also promised to reduce the number of child deaths by two-thirds.

Many deaths during childbirth could be prevented by the following methods EXCEPT

A．by passing virus to the babies.

B．by using medicines.

C．by improving health condition.

D．by vaccine inoculation.

请帮忙给出正确答案和分析，谢谢！