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【单选题】
带虫免疫是宿主感染寄生虫后产生的免疫力A.
能将寄生虫清除
B.
不能清除寄生虫
C.
虽不能将虫体全部清除,但对重复感染产生一定的免疫力
D.
可使虫体寿命缩短或症状减轻
E.
虽不能将虫体全部清除,但对重复感染产生一定的免疫力,这种免疫力当宿主被治疗后就逐渐消失
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A.
prospective
B.
preliminary
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D.
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A.
justifies
B.
justified
C.
is justifying
D.
is justified
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A.
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B.
surprised
C.
tired
D.
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