What advice does the writer give to U. S. software companies?
A.They must pay their employees more for their hard work.
B.They should tell their workers to pay more attention to production cost.
C.They must try their best to attract more specialists.
D.They should be more concerned with the quality of their products.
第1题
人体的贮存铁的储存形式为
A.血红蛋白形式
B.肌红蛋白形式
C.高铁血红蛋白形式
D.铁蛋白和含铁血黄素形式
E.转铁蛋白形式
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