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【单选题】
肿瘤标志物不可能是下列哪种物质（）A.
糖蛋白
B.
糖脂
C.
酶
D.
单糖
E.
激素
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反馈参考答案：
举一反三
【单选题】Hurry up! The play ( )for ten minutes.
A.
has begun
B.
began
C.
had begun
D.
has been on
【单选题】Hurry up !The play for ten minutes.
A.
has begun
B.
had begun
C.
has been on
D.
began
【简答题】剂量 n. d_ _ _
【简答题】目的地 n. d_ _ _ _ _ _ _ _ _ _
【单选题】Hurry up! The play ___ for ten minutes.
A.
has begun
B.
was begun
C.
has been on
D.
began
【简答题】详情；细节 n. d_ _ _ _ _ _ _ _
【简答题】执照 n. d_ _ _ _ _ _
【单选题】Hurry up! The play ____ for 10 minutes.
A.
has been on
B.
has begun
C.
had begun
D.
began
【简答题】争论，辩论 n. d_ _ _ _ _
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