皮皮学，免费搜题
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搜题
【单选题】
血红蛋白分子中包含的金属离子是A.
镁离子
B.
铁离子
C.
锌离子
D.
锰离子
E.
铜离子
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举一反三
【单选题】Teaching activities must be based on the students‘ cognitive development level and the existing experienced knowledge， thus， students‘ personal knowledge， students‘ life world and__________ are also t...
A.
game activities
B.
labour activities
C.
attitude
D.
direct experience
【单选题】This special school accepts all disabled students, __ educational level and background.
A.
according to
B.
regardless of
C.
in addition to
D.
in terms of
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