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【单选题】
致敏CTL清除靶细胞时,导致靶细胞DNA裂解的物质是A.
穿孔素
B.
Fas蛋白
C.
蛋白聚糖
D.
颗粒酶
E.
白细胞介素
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举一反三
【单选题】The peace agreement is new and still vulnerable to being destroyed.
A.
life-changing
B.
easily spread to other people
C.
conflict between different groups of people from the same country
D.
weak and easily hurt by
E.
likely to change suddenly
F.
polite in a formal way
【简答题】:eq(index) 选择器的 index 值从 () 开始。
【简答题】_______ means being nervous and unable to keep still.
【简答题】:eq(index)选择器的index值从______开始A. 0
【简答题】16. Being still and hearty in spite of his sy years, my father is able to add to his
pension by selling vegetables from his garden.A. strong B. powerful C. cheerful D. hale
【简答题】计算某元件的功率得到P>0的结果,可知该元件____功率,反之,P<0,则该元件____功率。
【简答题】A．Living in a community of friends. B．Enjoying a still and quiet life. C．Being cut off from the exciting s. D．Going back closer to nature.
【简答题】Still others may () enjoy being outdoors and close to plants. (2016· 全国 II )
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