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【单选题】
急性白血 病贫血的主要原因A.
铁吸收不良
B.
促红细胞生成素减少
C.
铁摄入不足
D.
红细胞生成减少或者出血致细胞丢失过多
E.
.红细胞寿命缩短
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【简答题】Please put Mary ' s things back where you found them ______ she won ' t know where they are. [A] and [ B] or [C] but [D] then
【单选题】Please put Mary's things back where you found them ______ she won't know where they are.
A.
and
B.
or
C.
but
D.
then
【单选题】—Where’s Mary? —She’s ________ the classroom.
A.
in front of
B.
between
C.
in middle of
D.
under
【单选题】—— Where did Mary’s parents buy the beautiful vase? —— It was in the same village _______ they spent their holidays last year.
A.
that
B.
when
C.
as
D.
where
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