【单选题】(6分13秒-7分21秒)When Bill Gates mentions that “What are the key pieces? First, we need strong health systems in poor countries. That's where mothers can give birth safely, kids can get all their vaccines...
A.
lots of people who've got the training and background who are ready to go, with the expertise.
B.
lots of medical interns who've got the training and background who are ready to go, with the expertise.
C.
lots of top doctors in this field who've got the training and background who are ready to go, with the expertise.
D.
lots of people who've got the training and license who are ready to go, with the expertise.