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搜题
【单选题】
结核结节主要由什么细胞构成A.
浆细胞
B.
淋巴细胞
C.
成纤维细胞
D.
上细胞和斯巨细胞
E.
巨噬细胞
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皮皮学刷刷变学霸
举一反三
【多选题】The word “fly” is very cleverly used in the poem “I Heard a Fly Buzz —When I Died”. What are the connotative meanings of it?
A.
It refers to that insect. Before death, the “fly” was buzzing around,“I” hear it.
B.
It suggests that the bustle of life is followed by the silent journey of death.
C.
It implies that death is not that important. “I” take a peaceful attitude towards death.
D.
It may indicate “free flying”. After death, it may lead “me” to go farther into the space of the forever: “I” am flying.
【简答题】骨骼的作用有两种,一是_____________,二是_____________。
【简答题】表示机车牵引力与运行速度之间关系的曲线称为机车的（）曲线。