单选题We should be grateful to Adam Smith because ______.A his ideas made it possible for people to improve their livesB he invented a more efficient way of pin makingC he started the industrial revolutionD he brought to people a high standard of living

题目
单选题
We should be grateful to Adam Smith because ______.
A

his ideas made it possible for people to improve their lives

B

he invented a more efficient way of pin making

C

he started the industrial revolution

D

he brought to people a high standard of living

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