高等教育 / 大学英语3
(单选题) The team of doctors wanted to find out _ _ _ _ _ _ _ _ _ _ .
A、why certain people age sooner than others
B、how to make people live longer
C、the size of certain people’s brains
D、which people are most intelligent
A、why certain people age sooner than others
B、how to make people live longer
C、the size of certain people’s brains
D、which people are most intelligent
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