题目内容
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[主观题]
What a role do lymphocytes play in the human body? A.To reduce the rate of dyi
What a role do lymphocytes play in the human body?
A.To reduce the rate of dying while still a fetus.
B.To raise the bodys immunity against infection.
C.To help prevent the development of heart disease.
D.To help prevenl the development of diabetes.
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