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【单选题】
He must be ill , _______ he is absent today.A.
because
B.
as
C.
since
D.
for
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举一反三
【简答题】设立个人独资企业需要具备以下条件中的（ ）。
【单选题】It may be inferred that the author would classify which of the following modes of behavior. as a referential symbol that originally derived from a condensation symbol?
A.
Vocalizing inarticulately in order to express rage without using words
B.
Writing a pictographic character that vaguely resembles a physical object
C.
Flag signaling where the flag movement relies on an existing arbitrary code
D.
The use of right-lane highways by general agreement
E.
Genuflection to indicate one's willingness to serve in a situation
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