问题
单项选择题
实现细胞免疫功能的白细胞是 ( )
A．T淋巴细胞
B．B淋巴细胞
C．巨噬细胞
D．单核细胞
E．嗜碱粒细胞
答案
参考答案：A
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实现细胞免疫功能的白细胞是 ( )
A．T淋巴细胞
B．B淋巴细胞
C．巨噬细胞
D．单核细胞
E．嗜碱粒细胞
参考答案：A
| 根据对话内容，选择正确的选项填空，使其意思完整与正确。 | |
| A: Hello, Wei Hua. B: Hello, Lin Tao. 1_______ A: I went to Beijing with my family. B: 2_______ A: We took a bus. B: 3_______ A: Yes, we did. And we took many pictures there. B: Where did you have lunch? A: 4_______ B: 5_______ A: Some cakes and drinks. B: When did you arrive home? A: At ten in the evening.
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