皮皮学，免费搜题
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搜题
【单选题】
无偿献血者临床用血时可免交的费用 DA.
血液的采集、储存
B.
血液的分离、储存
C.
血液的采集、分离、检验
D.
血液的采集、储存、分离、检验
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】—________ you ever ________ the Great Wall? —Yes, twice. [ ]
A.
Have; been
B.
Have; been to
C.
Have; gone to
D.
Have; been in
【单选题】Have you ever been in such a situation _____ you are very embarrassed and don't know what to say? [ ]
A.
which
B.
where
C.
when
D.
that
【简答题】我国最早发行国际信用卡的银行是：（）
【单选题】—_______ you ever _______ to Beijing? —No, I _______. [ ]
A.
Have; been; haven't
B.
Have; gone; hasn't
C.
Have; been; hasn't
D.
Have; gone; haven't
【简答题】—Have you ever been to Shanghai? —______. A) Not yet B) Haven't C) Yet not D) Still not
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