皮皮学，免费搜题
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搜题
【单选题】
_________ of us knows how many of them have been killed in that accident.A.
None
B.
No one
C.
Not all
D.
Not a one
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皮皮学刷刷变学霸
举一反三
【单选题】What is the author's attitude toward the claims made by advocates of health foods?
A.
very enthusiastic.
B.
somewhat favorable.
C.
neutral.
D.
skeptical.