皮皮学，免费搜题
登录
搜题
【单选题】
Sociolinguistics is concerned with which of the following social factors.A.
Social class
B.
Nationality
C.
Occupation
D.
All of the above
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
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
【简答题】硫呼吸(sulfur respiration)
【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：
知识点：
题目纠错 0
发布
