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【单选题】
EliminateA.
排除
B.
嵌入
C.
肠炎
D.
酶
E.
流行病学
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反馈参考答案：
举一反三
【单选题】During combustion, oxidized sulfur compounds can be converted to .
A.
sodium
B.
sulfate
C.
sulfide
D.
sulfur
【简答题】sulfur
【简答题】elemental sulfur ( )
【单选题】Sulfur is
A.
an element
B.
a compound
C.
a heterogeneous mixture
D.
a homogeneous mixture
【简答题】Sulfur has occasionally been found in the earth in an almost pure state.
【简答题】organic sulfur
【单选题】The most common and stable allotrope of sulfur is __________.
A.
S
B.
S2
C.
S4
D.
S8
E.
Sulfur does not form allotropes
参考解析：
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