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【单选题】
免疫系统的组成是A.
中枢免疫器官、免疫细胞和黏膜免疫系统
B.
中枢免疫器官和外周免疫器官
C.
免疫器官、免疫细胞和免疫分子
D.
胸腺和骨髓
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】下图中的绿色框线是创建的空物体,请写出创建空物体的英文。
【简答题】小题1:_____ People with intellectual disability form one of the largest single disability groups in a community. Intellectual disability refers to a general slowness to learn and function within socie...
【单选题】A simplified form. of speech developed as a medium of trade between groups of people who have no other language in common is called______.
A.
creole
B.
pidgin
C.
lingua franca
D.
Slang
【单选题】Why do hoatzins collect together in smaller groups when the rainy season comes?
A.
To find more food.
B.
To protect themselves better.
C.
To keep themselves warm.
D.
To produce their young.
【简答题】Why do some business groups form. an 'unlikely alliance' with the Catholic church and Latinos in the debate? (Para. 6)
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