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【单选题】
药物杂质中的信号杂质是( )A.
氯化物
B.
砷盐
C.
重金属盐
D.
氰化物
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反馈参考答案：
举一反三
【单选题】I looked under ( ) bed and found ( ) pen I lost yesterday.
A.
the; a
B.
the; the
C.
/; the
D.
the; /
【单选题】I looked under ___ table and found ____ pen I lost last week.
A.
the, the
B.
the, a
C.
/, /
D.
the, /
【简答题】I looked under bed and found pen I lost yesterday.A. the; a B. the; the C. /; the D. the; /
【单选题】I looked under ____ bed and found ____ book I lost last week. [ ]
A.
the; a
B.
the; the
C.
/; the
D.
the; /
【单选题】I looked under_____bed and found books I lost last week.
A.
the ； a
B.
the ； the
C.
不填； the
D.
the ； 不填
【单选题】I looked under _____ bed and found _____ book I lost last week. [ ]
A.
the; a
B.
the; the
C.
不填; the
D.
the; 不填
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