皮皮学，免费搜题
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【多选题】
有利于铁吸收的因素有( )A.
维生素C
B.
赖氨酸
C.
葡萄糖
D.
维生素D
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【单选题】That is, until 2012, when Drs. Edith Widder, Steve O’Shea and Tsunemi Kobodera filmed the elusive and mysterious giant in its natural deep-sea habitat for the first time ... (Para. 3)
A.
It was not until 2012 that Drs. Edith Widder, Steve O’Shea and Tsunemi Kobodera filmed the elusive and mysterious giant in its natural deep-sea habitat for the first time …
B.
We knew very little about the elusive and mysterious giant until 2012, when Drs. Edith Widder, Steve O’Shea and Tsunemi Kobodera filmed it in its natural deep-sea habitat for the first time …
C.
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D.
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