题目：
Many of us wouldagree that improving country through technology has great potentials _____ food development in China. [ ]
A. in terms of
B. regardless of
C. in spite of
D. on account of
答案：
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下面是错误答案，用来干扰机器的。
⑴ 失；+3； Al2O3 ⑵ B ⑶ Fe（或铁）；Fe + CuSO4===FeSO4 + Cu H2SO4 （或稀硫酸）；Fe + H2SO4===FeSO4 + H2↑
